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  1. Article: Extremity high-grade sarcomas in elderly patients, are they candidates for surgery? Experience in a sarcoma referral center.

    Escobar-Mendiola, Daniel / Mediavilla-Santos, Lydia / Pérez-Mañanes, Rubén / Cuervo-Dehesa, Miguel / Vaquero-Martin, Javier / Calvo-Haro, José

    Indian journal of surgical oncology

    2022  Volume 15, Issue Suppl 1, Page(s) 11–18

    Abstract: The number of elderly patients diagnosed with cancer is increasing. However, knowledge regarding cancer in elderly patients is very scarce. The aim of this study is to analyze the differences in management and outcomes of high-grade extremity sarcomas ... ...

    Abstract The number of elderly patients diagnosed with cancer is increasing. However, knowledge regarding cancer in elderly patients is very scarce. The aim of this study is to analyze the differences in management and outcomes of high-grade extremity sarcomas between elderly and middle-aged patients. Two cohorts were made (> 70 and 30/50 years old) among patients treated in a multidisciplinary unit of a national reference center between 2011 and 2017 with a minimum of 2 years of follow-up. The management and outcomes between these two cohorts were compared. Seventy patients were included, 34 young patients and 36 elderly patients. The only difference between the treatment schemes was the chemotherapy used, 67.6% of the young patients received chemotherapy versus 16.7% of the elderly patients (
    Language English
    Publishing date 2022-09-27
    Publishing country India
    Document type Journal Article
    ZDB-ID 2568289-1
    ISSN 0976-6952 ; 0975-7651
    ISSN (online) 0976-6952
    ISSN 0975-7651
    DOI 10.1007/s13193-022-01652-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Mycorrhization between Cistus ladanifer L. and Boletus edulis Bull is enhanced by the mycorrhiza helper bacteria Pseudomonas fluorescens Migula.

    Mediavilla, Olaya / Olaizola, Jaime / Santos-del-Blanco, Luis / Oria-de-Rueda, Juan Andrés / Martín-Pinto, Pablo

    Mycorrhiza

    2016  Volume 26, Issue 2, Page(s) 161–168

    Abstract: ... over 40 years old, but it has also been reported in 3-year-old Cistus ladanifer L. shrubs. Efforts ...

    Abstract Boletus edulis Bull. is one of the most economically and gastronomically valuable fungi worldwide. Sporocarp production normally occurs when symbiotically associated with a number of tree species in stands over 40 years old, but it has also been reported in 3-year-old Cistus ladanifer L. shrubs. Efforts toward the domestication of B. edulis have thus focused on successfully generating C. ladanifer seedlings associated with B. edulis under controlled conditions. Microorganisms have an important role mediating mycorrhizal symbiosis, such as some bacteria species which enhance mycorrhiza formation (mycorrhiza helper bacteria). Thus, in this study, we explored the effect that mycorrhiza helper bacteria have on the efficiency and intensity of the ectomycorrhizal symbiosis between C. ladanifer and B. edulis. The aim of this work was to optimize an in vitro protocol for the mycorrhizal synthesis of B. edulis with C. ladanifer by testing the effects of fungal culture time and coinoculation with the helper bacteria Pseudomonas fluorescens Migula. The results confirmed successful mycorrhizal synthesis between C. ladanifer and B. edulis. Coinoculation of B. edulis with P. fluorescens doubled within-plant mycorrhization levels although it did not result in an increased number of seedlings colonized with B. edulis mycorrhizae. B. edulis mycelium culture time also increased mycorrhization levels but not the presence of mycorrhizae. These findings bring us closer to controlled B. edulis sporocarp production in plantations.
    MeSH term(s) Basidiomycota/growth & development ; Cistus/microbiology ; Cistus/physiology ; Microbial Interactions ; Mycorrhizae/growth & development ; Mycorrhizae/physiology ; Pseudomonas fluorescens/growth & development ; Pseudomonas fluorescens/physiology ; Symbiosis
    Language English
    Publishing date 2016-02
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1087945-6
    ISSN 1432-1890 ; 0940-6360
    ISSN (online) 1432-1890
    ISSN 0940-6360
    DOI 10.1007/s00572-015-0657-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Patient-specific desktop 3D-printed guides for pelvic tumour resection surgery: a precision study on cadavers.

    García-Sevilla, Mónica / Mediavilla-Santos, Lydia / Ruiz-Alba, María Teresa / Pérez-Mañanes, Rubén / Calvo-Haro, José Antonio / Pascau, Javier

    International journal of computer assisted radiology and surgery

    2021  Volume 16, Issue 3, Page(s) 397–406

    Abstract: Purpose: 3D-printed patient-specific instruments have become a useful tool to improve accuracy in pelvic tumour resections. However, their correct placement can be challenging in some regions due to the morphology of the bone, so it is essential to be ... ...

    Abstract Purpose: 3D-printed patient-specific instruments have become a useful tool to improve accuracy in pelvic tumour resections. However, their correct placement can be challenging in some regions due to the morphology of the bone, so it is essential to be aware of the possible placement errors in each region. In this study, we characterize these errors in common pelvic osteotomies.
    Methods: We conducted an experiment with 9 cadaveric specimens, for which we acquired a pre-operative computed tomography scan. Small PSIs were designed for each case following a realistic surgical approach for four regions of the pelvis: iliac crest (C), supra-acetabular (S), ischial (I), and pubic (P). Final surgical placement was based on a post-operative scan. The resulting positions were compared with pre-operative planning, obtaining translations, rotations, and maximum osteotomy deviations in a local reference frame defined based on the bone's morphology.
    Results: Mean translations and rotations in the direction of the osteotomy plane were as follows: C = 5.3 mm, 6.7°; S = 1.8 mm, 5.1°; I = 1.5 mm, 3.4°; P = 1.8 mm, 3.5°. Mean translations in the remaining axes were below 2 mm. Maximum osteotomy deviations (75% of cases) were below 11.8 mm in C (7.8 mm for half-length), 7.8 mm in S (5.5 mm for half-length), 5.5 mm in I, and 3.7 mm in P.
    Conclusion: We have characterized placement errors for small PSIs in four regions of the pelvis. Our results show high errors in C and S PSIs in the direction of the resection plane's normal, and thus large osteotomy deviations. Deviations in short osteotomies in S, I and P and placement errors in the remaining directions were low. The PSIs used in this study are biocompatible and can be produced with a desktop 3D printer, thus minimizing manufacturing cost.
    MeSH term(s) Acetabulum/surgery ; Cadaver ; Humans ; Imaging, Three-Dimensional/methods ; Osteotomy/methods ; Pelvic Neoplasms/diagnostic imaging ; Pelvis ; Postoperative Period ; Preoperative Period ; Printing, Three-Dimensional ; Reference Values ; Reproducibility of Results ; Surgery, Computer-Assisted/methods ; Tomography, X-Ray Computed
    Language English
    Publishing date 2021-02-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2365628-1
    ISSN 1861-6429 ; 1861-6410
    ISSN (online) 1861-6429
    ISSN 1861-6410
    DOI 10.1007/s11548-021-02322-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: [Translated article] Validation of patient-specific 3D impression models for pelvic oncological orthopedic surgery.

    Mediavilla-Santos, L / García-Sevilla, M / Calvo-Haro, J A / Ruiz Alba, M T / Pérez-Mañanes, R / Pascau González, J / Cuervo Dehesa, M / Vaquero Martín, F J

    Revista espanola de cirugia ortopedica y traumatologia

    2022  Volume 66, Issue 5, Page(s) T403–T409

    Abstract: Introduction: Pelvic ring tumours pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative ...

    Abstract Introduction: Pelvic ring tumours pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative planning and intraoperative execution. Their correct positioning is essential in complex locations such as the pelvis, so it is necessary to identify positioning errors. The aim of this study is to demonstrate the reliability of 3D template placement for pelvic ring osteotomies.
    Material and methods: Experimental study in cadaver with 10 hemipelvis. CT was performed to obtain the three-dimensional model, planning of osteotomies, design of positioning templates in ischiopubic (I), iliopubic (P), supracetabular (S) and iliac crest (C) branches; and a positioning marker (rigid-body) on the C and S templates for navigation. The templates and rigid-body are 3D printed and positioned according to pre-planning. Navigation allows the final position of the inserts and osteotomies to be checked.
    Results: The positioning of the templates with respect to the preoperative planning varied depending on the location, being greater the error in those of the iliac crest. Using navigation the mean error of distance to the cutting plane is 3.5mm, except in pubis (5-8mm), being conditioned by the position of the rigid body.
    Conclusion: The use of patient-specific templates printed in 3D is a reliable tool for performing osteotomies in pelvic cancer surgery.
    Language Spanish
    Publishing date 2022-07-14
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 2417057-4
    ISSN 1988-8856 ; 1888-4415
    ISSN (online) 1988-8856
    ISSN 1888-4415
    DOI 10.1016/j.recot.2022.07.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: HoloLens 1 vs. HoloLens 2: Improvements in the New Model for Orthopedic Oncological Interventions.

    Pose-Díez-de-la-Lastra, Alicia / Moreta-Martinez, Rafael / García-Sevilla, Mónica / García-Mato, David / Calvo-Haro, José Antonio / Mediavilla-Santos, Lydia / Pérez-Mañanes, Rubén / von Haxthausen, Felix / Pascau, Javier

    Sensors (Basel, Switzerland)

    2022  Volume 22, Issue 13

    Abstract: This work analyzed the use of Microsoft HoloLens 2 in orthopedic oncological surgeries and compares it to its predecessor (Microsoft HoloLens 1). Specifically, we developed two equivalent applications, one for each device, and evaluated the augmented ... ...

    Abstract This work analyzed the use of Microsoft HoloLens 2 in orthopedic oncological surgeries and compares it to its predecessor (Microsoft HoloLens 1). Specifically, we developed two equivalent applications, one for each device, and evaluated the augmented reality (AR) projection accuracy in an experimental scenario using phantoms based on two patients. We achieved automatic registration between virtual and real worlds using patient-specific surgical guides on each phantom. They contained a small adaptor for a 3D-printed AR marker, the characteristic patterns of which were easily recognized using both Microsoft HoloLens devices. The newest model improved the AR projection accuracy by almost 25%, and both of them yielded an RMSE below 3 mm. After ascertaining the enhancement of the second model in this aspect, we went a step further with Microsoft HoloLens 2 and tested it during the surgical intervention of one of the patients. During this experience, we collected the surgeons' feedback in terms of comfortability, usability, and ergonomics. Our goal was to estimate whether the improved technical features of the newest model facilitate its implementation in actual surgical scenarios. All of the results point to Microsoft HoloLens 2 being better in all the aspects affecting surgical interventions and support its use in future experiences.
    MeSH term(s) Augmented Reality ; Ergonomics ; Humans ; Orthopedic Procedures ; Phantoms, Imaging ; Software ; Surgery, Computer-Assisted/methods
    Language English
    Publishing date 2022-06-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s22134915
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Validation of patient-specific 3D impression models for pelvic oncological orthopedic surgery.

    Mediavilla-Santos, L / García-Sevilla, M / Calvo-Haro, J A / Ruiz Alba, M T / Pérez-Mañanes, R / Pascau González, J / Cuervo Dehesa, M / Vaquero Martín, F J

    Revista espanola de cirugia ortopedica y traumatologia

    2021  Volume 66, Issue 5, Page(s) 403–409

    Abstract: Introduction: Pelvic ring tumors pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative ... ...

    Title translation Validación de los modelos de impresión 3D paciente-específicos para cirugía ortopédica oncológica pélvica.
    Abstract Introduction: Pelvic ring tumors pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative planning and intraoperative execution. Their correct positioning is essential in complex locations such as the pelvis, so it is necessary to identify positioning errors. The aim of this study is to demonstrate the reliability of 3D template placement for pelvic ring osteotomies.
    Material and methods: Experimental study in cadaver with 10 hemipelvis. CT was performed to obtain the three-dimensional model, planning of osteotomies, design of positioning templates in ischiopubic (I), iliopubic (P), supracetabular (S) and iliac crest (C) branches; and a positioning marker (rigid-body) on the C and S templates for navigation. The templates and rigid-body are 3D printed and positioned according to pre-planning. Navigation allows the final position of the inserts and osteotomies to be checked.
    Results: The positioning of the templates with respect to the preoperative planning varied depending on the location, being greater the error in those of the iliac crest. Using navigation the mean error of distance to the cutting plane is 3.5mm, except in pubis (5-8mm), being conditioned by the position of the rigid body.
    Conclusion: The use of patient-specific templates printed in 3D is a reliable tool for performing osteotomies in pelvic cancer surgery.
    Language Spanish
    Publishing date 2021-08-24
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 2417057-4
    ISSN 1988-8856 ; 1888-4415
    ISSN (online) 1988-8856
    ISSN 1888-4415
    DOI 10.1016/j.recot.2021.07.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Application of 3D printing and distributed manufacturing during the first-wave of COVID-19 pandemic. Our experience at a third-level university hospital.

    Perez-Mañanes, Rubén / José, Sonia García-de San / Desco-Menéndez, Manuel / Sánchez-Arcilla, Ignacio / González-Fernández, Esmeralda / Vaquero-Martín, Javier / González-Garzón, Javier Pascau / Mediavilla-Santos, Lydia / Trapero-Moreno, Diego / Calvo-Haro, José Antonio

    3D printing in medicine

    2021  Volume 7, Issue 1, Page(s) 7

    Abstract: Background: 3D printing and distributed manufacturing represent a paradigm shift in the health system that is becoming critical during the COVID-19 pandemic. University hospitals are also taking on the role of manufacturers of custom-made solutions ... ...

    Abstract Background: 3D printing and distributed manufacturing represent a paradigm shift in the health system that is becoming critical during the COVID-19 pandemic. University hospitals are also taking on the role of manufacturers of custom-made solutions thanks to 3D printing technology.
    Case presentation: We present a monocentric observational case study regarding the distributed manufacturing of three groups of products during the period of the COVID-19 pandemic from 14 March to 10 May 2020: personal protective equipment, ventilatory support, and diagnostic and consumable products. Networking during this period has enabled the delivery of a total of 17,276 units of products manufactured using 3D printing technology. The most manufactured product was the face shields and ear savers, while the one that achieved the greatest clinical impact was the mechanical ventilation adapters and swabs. The products were manufactured by individuals in 57.3% of the cases, and our hospital acted as the main delivery node in a hub with 10 other hospitals. The main advantage of this production model is the fast response to stock needs, being able to adapt almost in real time.
    Conclusions: The role of 3D printing in the hospital environment allows the reconciliation of in-house and distributed manufacturing with traditional production, providing custom-made adaptation of the specifications, as well as maximum efficiency in the working and availability of resources, which is of special importance at critical times for health systems such as the current COVID-19 pandemic.
    Language English
    Publishing date 2021-03-08
    Publishing country England
    Document type Journal Article
    ISSN 2365-6271
    ISSN (online) 2365-6271
    DOI 10.1186/s41205-021-00097-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Conceptual evolution of 3D printing in orthopedic surgery and traumatology: from "do it yourself" to "point of care manufacturing".

    Calvo-Haro, Jose Antonio / Pascau, Javier / Mediavilla-Santos, Lydia / Sanz-Ruiz, Pablo / Sánchez-Pérez, Coral / Vaquero-Martín, Javier / Perez-Mañanes, Rubén

    BMC musculoskeletal disorders

    2021  Volume 22, Issue 1, Page(s) 360

    Abstract: Background: 3D printing technology in hospitals facilitates production models such as point-of-care manufacturing. Orthopedic Surgery and Traumatology is the specialty that can most benefit from the advantages of these tools. The purpose of this study ... ...

    Abstract Background: 3D printing technology in hospitals facilitates production models such as point-of-care manufacturing. Orthopedic Surgery and Traumatology is the specialty that can most benefit from the advantages of these tools. The purpose of this study is to present the results of the integration of 3D printing technology in a Department of Orthopedic Surgery and Traumatology and to identify the productive model of the point-of-care manufacturing as a paradigm of personalized medicine.
    Methods: Observational, descriptive, retrospective and monocentric study of a total of 623 additive manufacturing processes carried out in a Department of Orthopedic Surgery and Traumatology from November 2015 to March 2020. Variables such as product type, utility, time or materials for manufacture were analyzed.
    Results: The areas of expertise that have performed more processes are Traumatology, Reconstructive and Orthopedic Oncology. Pre-operative planning is their primary use. Working and 3D printing hours, as well as the amount of 3D printing material used, vary according to the type of product or material delivered to perform the process. The most commonly used 3D printing material for manufacturing is polylactic acid, although biocompatible resin has been used to produce surgical guides. In addition, the hospital has worked on the co-design of customized implants with manufacturing companies.
    Conclusions: The integration of 3D printing in a Department of Orthopedic Surgery and Traumatology allows identifying the conceptual evolution from "Do-It-Yourself" to "POC manufacturing".
    MeSH term(s) Humans ; Models, Anatomic ; Orthopedic Procedures ; Point-of-Care Systems ; Printing, Three-Dimensional ; Retrospective Studies ; Traumatology
    Language English
    Publishing date 2021-04-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041355-5
    ISSN 1471-2474 ; 1471-2474
    ISSN (online) 1471-2474
    ISSN 1471-2474
    DOI 10.1186/s12891-021-04224-6
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  9. Article ; Online: Combining Augmented Reality and 3D Printing to Improve Surgical Workflows in Orthopedic Oncology: Smartphone Application and Clinical Evaluation.

    Moreta-Martinez, Rafael / Pose-Díez-de-la-Lastra, Alicia / Calvo-Haro, José Antonio / Mediavilla-Santos, Lydia / Pérez-Mañanes, Rubén / Pascau, Javier

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 4

    Abstract: During the last decade, orthopedic oncology has experienced the benefits of computerized medical imaging to reduce human dependency, improving accuracy and clinical outcomes. However, traditional surgical navigation systems do not always adapt properly ... ...

    Abstract During the last decade, orthopedic oncology has experienced the benefits of computerized medical imaging to reduce human dependency, improving accuracy and clinical outcomes. However, traditional surgical navigation systems do not always adapt properly to this kind of interventions. Augmented reality (AR) and three-dimensional (3D) printing are technologies lately introduced in the surgical environment with promising results. Here we present an innovative solution combining 3D printing and AR in orthopedic oncological surgery. A new surgical workflow is proposed, including 3D printed models and a novel AR-based smartphone application (app). This app can display the patient's anatomy and the tumor's location. A 3D-printed reference marker, designed to fit in a unique position of the affected bone tissue, enables automatic registration. The system has been evaluated in terms of visualization accuracy and usability during the whole surgical workflow. Experiments on six realistic phantoms provided a visualization error below 3 mm. The AR system was tested in two clinical cases during surgical planning, patient communication, and surgical intervention. These results and the positive feedback obtained from surgeons and patients suggest that the combination of AR and 3D printing can improve efficacy, accuracy, and patients' experience.
    MeSH term(s) Augmented Reality ; Humans ; Imaging, Three-Dimensional ; Printing, Three-Dimensional ; Smartphone ; Surgery, Computer-Assisted ; Workflow
    Language English
    Publishing date 2021-02-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21041370
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  10. Article ; Online: Intraoperative radiotherapy for extremity soft-tissue sarcomas: can long-term local control be achieved?

    Carbó-Laso, Esther / Sanz-Ruiz, Pablo / Calvo-Haro, José Antonio / Cuervo-Dehesa, Miguel / Pérez-Mañanes, Rubén / Mediavilla-Santos, Lydia / Sánchez-Pérez, Coral / Álvarez-González, Ana / Vaquero-Martín, Javier

    International journal of clinical oncology

    2017  Volume 22, Issue 6, Page(s) 1094–1102

    Abstract: Background: Intraoperative electron-beam radiation therapy (IOERT) during limb-sparing surgery has the advantage of delivering a single high boost dose to sarcoma residues and surgical bed area near to radiosensitive structures with limited toxicity. ... ...

    Abstract Background: Intraoperative electron-beam radiation therapy (IOERT) during limb-sparing surgery has the advantage of delivering a single high boost dose to sarcoma residues and surgical bed area near to radiosensitive structures with limited toxicity. Retrospective studies have suggested that IOERT may improve local control compared to standard radiotherapy and we aimed to demonstrate this theory. Therefore, we performed an observational prospective study to determine (1) if it is possible to achieve high local control by adding IOERT to external-beam radiation therapy (EBRT) in extremity soft-tissue sarcomas (STS), (2) if it is possible to improve long-term survival rates, and (3) if toxicity could be reduced with IOERT MATERIALS AND METHODS: From 1995-2003, 39 patients with extremity STS were treated with IOERT and postoperative radiotherapy. The median follow-up time was 13.2 years (0.7-19). Complications, locoregional control and survival rates were collected.
    Results: Actuarial local control was attained in 32 of 39 patients (82%). Control was achieved in 88% of patients with primary disease and in 50% of those with recurrent tumors (p = 0.01). Local control was shown in 93% of patients with negative margins and in 50% of those with positive margins (p = 0.002). Limb-sparing was achieved in 32 patients (82%). The overall survival rate was 64%. 13% of patients had grade ≥3 acute toxicity, and 12% developed grade ≥3 chronic toxicity.
    Conclusion: IOERT used as a boost to EBRT provides high local control and limb-sparing rates in patients with STS of the extremities, with less toxicity than EBRT alone.
    Language English
    Publishing date 2017-12
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1400227-9
    ISSN 1437-7772 ; 1341-9625
    ISSN (online) 1437-7772
    ISSN 1341-9625
    DOI 10.1007/s10147-017-1162-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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