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  1. Article ; Online: Wireless Stimulation of Motor Cortex Through a Collagen Dura Substitute Using an Ultra-Thin Implant Fabricated on Parylene/PDMS.

    Benbuk, Abed / Gulick, Daniel / Moniz-Garcia, Diogo / Liu, Shiyi / Quinones-Hinojosa, Alfredo / Christen, Jennifer Blain

    IEEE transactions on biomedical circuits and systems

    2024  Volume 18, Issue 2, Page(s) 334–346

    Abstract: We present the design, fabrication, and in vivo testing of an ultra-thin (100 μm) wireless and battery-free implant for stimulation of the brain's cortex. The implant is fabricated on a flexible and transparent parylene/PDMS substrate, and it is ... ...

    Abstract We present the design, fabrication, and in vivo testing of an ultra-thin (100 μm) wireless and battery-free implant for stimulation of the brain's cortex. The implant is fabricated on a flexible and transparent parylene/PDMS substrate, and it is miniaturized to dimensions of 15.6 × 6.6 mm
    MeSH term(s) Motor Cortex ; Prostheses and Implants ; Electrodes ; Wireless Technology ; Polymers ; Xylenes
    Chemical Substances parylene (25722-33-2) ; Polymers ; Xylenes
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Journal Article
    ISSN 1940-9990
    ISSN (online) 1940-9990
    DOI 10.1109/TBCAS.2023.3329447
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Systemic Therapy for Melanoma Brain and Leptomeningeal Metastases.

    Sherman, Wendy J / Romiti, Edoardo / Michaelides, Loizos / Moniz-Garcia, Diogo / Chaichana, Kaisorn L / Quiñones-Hinojosa, Alfredo / Porter, Alyx B

    Current treatment options in oncology

    2023  Volume 24, Issue 12, Page(s) 1962–1977

    Abstract: Opinion statement: Melanoma has a high propensity to metastasize to the brain which portends a poorer prognosis. With advanced radiation techniques and targeted therapies, outcomes however are improving. Melanoma brain metastases are best managed in a ... ...

    Abstract Opinion statement: Melanoma has a high propensity to metastasize to the brain which portends a poorer prognosis. With advanced radiation techniques and targeted therapies, outcomes however are improving. Melanoma brain metastases are best managed in a multi-disciplinary approach, including medical oncologists, neuro-oncologists, radiation oncologists, and neurosurgeons. The sequence of therapies is dependent on the number and size of brain metastases, status of systemic disease control, prior therapies, performance status, and neurological symptoms. The goal of treatment is to minimize neurologic morbidity and prolong both progression free and overall survival while maximizing quality of life. Surgery should be considered for solitary metastases, or large and/or symptomatic metastases with edema. Stereotactic radiosurgery offers a benefit over whole-brain radiation attributed to the relative radioresistance of melanoma and reduction in neurotoxicity. Thus far, data supports a more durable response with systemic therapy using combination immunotherapy of ipilimumab and nivolumab, though targeting the presence of BRAF mutations can also be utilized. BRAF inhibitor therapy is often used after immunotherapy failure, unless a more rapid initial response is needed and then can be done prior to initiating immunotherapy. Further trials are needed, particularly for leptomeningeal metastases which currently require the multi-disciplinary approach to determine best treatment plan.
    MeSH term(s) Humans ; Melanoma/drug therapy ; Melanoma/etiology ; Proto-Oncogene Proteins B-raf/genetics ; Quality of Life ; Combined Modality Therapy ; Brain/pathology ; Brain Neoplasms/drug therapy ; Brain Neoplasms/genetics ; Radiosurgery/methods
    Chemical Substances Proto-Oncogene Proteins B-raf (EC 2.7.11.1)
    Language English
    Publishing date 2023-12-30
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2057351-0
    ISSN 1534-6277 ; 1527-2729
    ISSN (online) 1534-6277
    ISSN 1527-2729
    DOI 10.1007/s11864-023-01155-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Endoscopic Endonasal Approach for Resection of a Recurrent Craniopharyngioma: Techniques to Maximize Surgical Exposure and Extent of Resection.

    Almeida, Joao Paulo / Marenco-Hillembrand, Lina / Moniz-Garcia, Diogo / Goyal, Anshit / Olomu, Osarenoma U / Quinones-Hinojosa, Alfredo

    World neurosurgery

    2023  Volume 180, Page(s) 66

    Abstract: Craniopharyngiomas are challenging tumors of the central nervous system that originate from epithelial remnants of the Rathke pouch. ...

    Abstract Craniopharyngiomas are challenging tumors of the central nervous system that originate from epithelial remnants of the Rathke pouch.
    MeSH term(s) Male ; Humans ; Middle Aged ; Craniopharyngioma/diagnostic imaging ; Craniopharyngioma/surgery ; Neuroendoscopy/methods ; Treatment Outcome ; Pituitary Neoplasms/diagnostic imaging ; Pituitary Neoplasms/surgery ; Neoplasm Recurrence, Local/surgery ; Brain Neoplasms/surgery
    Language English
    Publishing date 2023-07-15
    Publishing country United States
    Document type Case Reports ; Video-Audio Media
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2023.07.031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Repeated surgical resections for management of high-grade glioma and its impact on quality of life.

    Koay, Jun Min / Michaelides, Loizos / Moniz-Garcia, Diogo P / Quinones-Hinojosa, Alfredo / Chaichana, Kaisorn / Almeida, Joao Paulo / Gruenbaum, Benjamin F / Sherman, Wendy J / Sabsevitz, David S

    Journal of neuro-oncology

    2024  Volume 167, Issue 2, Page(s) 267–273

    Abstract: Purpose: High-grade gliomas (HGG) are aggressive cancers, and their recurrence is inevitable, despite advances in treatment options. While repeated tumor resection has been shown to increase survival rate, its impact on quality of life is not clearly ... ...

    Abstract Purpose: High-grade gliomas (HGG) are aggressive cancers, and their recurrence is inevitable, despite advances in treatment options. While repeated tumor resection has been shown to increase survival rate, its impact on quality of life is not clearly defined. To address this gap, we compared quality of life (QoL) changes in HGG patients who underwent first-time (FTR) versus repeat surgical resections (RSR) for management of recurrence.
    Methods: Forty-four adults with HGG who underwent tumor resection were included in this study and classified into either the FTR group (n = 23) or the RSR group (n = 21). All patients completed comprehensive neuropsychological evaluations that included the Functional Assessment of Cancer Therapy-General (FACT-G) and Functional Assessment of Cancer Therapy-Cognitive Function (FACT-Cog) scales, pre-operatively and at two weeks post-operatively.
    Results: There was no difference between the FTR and RSR groups in any of the QoL indices (all p > .05), except for improved emotional well-being and worsened social well-being, suggesting minimal detrimental effects of repeat surgeries on QoL in comparison to first time surgery.
    Conclusions: These results suggest that repeated resection is a viable strategy in certain cases for management of HGG recurrence, with similar impact on QoL as observed in patients undergoing first time surgery. These encouraging outcomes provide useful insight to guide treatment strategies and patient and clinician decision making to optimize surgical and functional outcomes.
    MeSH term(s) Adult ; Humans ; Brain Neoplasms/pathology ; Quality of Life ; Glioma/pathology ; Reoperation
    Language English
    Publishing date 2024-02-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604875-4
    ISSN 1573-7373 ; 0167-594X
    ISSN (online) 1573-7373
    ISSN 0167-594X
    DOI 10.1007/s11060-024-04600-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Intracranial aneurysms in patients with acute ischemic stroke prevalence and influence on mechanical thrombectomy over 14 years in a tertiary-care center.

    Moniz-Garcia, Diogo / Ravindran, Krishnan / Wessell, Aaron / Muneer, Mohamed S / Ahmed, Eglal / Perez Vega, Carlos / Kashyap, Samir / Vibhute, Prasanna / Gupta, Vivek / Freeman, William D / Sandhu, Sukwhinder / Tawk, Rabih G

    Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia

    2024  Volume 124, Page(s) 109–114

    Abstract: Introduction: The prevalence of intracranial aneurysms (IA) in patients with acute ischemic stroke (AIS) requiring mechanical thrombectomy (MT) is unclear.: Objective: To describe the prevalence of IA in patients with AIS and their influence on MT.!## ...

    Abstract Introduction: The prevalence of intracranial aneurysms (IA) in patients with acute ischemic stroke (AIS) requiring mechanical thrombectomy (MT) is unclear.
    Objective: To describe the prevalence of IA in patients with AIS and their influence on MT.
    Materials & methods: This is a retrospective cohort study on all patients admitted with a diagnosis of AIS from January 2008 to March 2022 at a tertiary academic center. The records were reviewed for demographic, clinical, imaging, and outcomes data. Only patients who had CTA at admission were included in this analysis.
    Results: Among 2265 patients admitted with AIS, this diagnosis was confirmed in 2113 patients (93.3 %). We included 1111 patients (52.6 %) who had head CTA and 321 (28.9 %) who underwent MT. The observed prevalence of aneurysms on CTA was 4.5 % (50/1111 patients), and 8 (16 %) had multiple aneurysms. MT was performed in 7 patients harboring IAs: 6 ipsilateral (5 proximal and 1 distal to the occlusion)and 1 contralateral aneurysm.. The patient with a contralateral aneurysm had a TICI 2B score In patients with ipsilateral aneurysms, TICI 2B or 3 was achieved in 3 cases (50 %), which is significantly lower than historical control of MT (91.6 %) without IA (p = 0.01). No aneurysms ruptured during MT. The aneurysm noted distal to the occlusion was mycotic.
    Conclusion: In this analysis, the observed prevalence of IA in patients with AIS was 4.5%. Ipsilateral aneurysms (proximal or distal to the occlusion site) deserve particular attention, given the potential risk of rupture during MT. Aneurysms located distal to the occlusion were mycotic and the rate of recanization in patients with ipsilateral aneurysms was low compared to historical controls. Further studies are needed to improve the outcomes in patients with IA requiring MT.
    MeSH term(s) Humans ; Intracranial Aneurysm/epidemiology ; Intracranial Aneurysm/surgery ; Intracranial Aneurysm/complications ; Male ; Female ; Ischemic Stroke/epidemiology ; Ischemic Stroke/surgery ; Tertiary Care Centers ; Retrospective Studies ; Middle Aged ; Aged ; Prevalence ; Thrombectomy/methods ; Aged, 80 and over
    Language English
    Publishing date 2024-05-01
    Publishing country Scotland
    Document type Journal Article
    ZDB-ID 1193674-5
    ISSN 1532-2653 ; 0967-5868
    ISSN (online) 1532-2653
    ISSN 0967-5868
    DOI 10.1016/j.jocn.2024.04.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Dual-Device Neuromodulation in Epilepsy.

    Freund, Brin / Grewal, Sanjeet S / Middlebrooks, Erik H / Moniz-Garcia, Diogo / Feyissa, Anteneh M / Tatum, William O

    World neurosurgery

    2022  Volume 161, Page(s) e596–e601

    Abstract: Objective: Current methods of neuromodulation have been shown to reduce seizures in patients with drug-resistant epilepsy, and in a small percentage of patients it has rendered them seizure-free when surgical resection is not feasible. While polytherapy ...

    Abstract Objective: Current methods of neuromodulation have been shown to reduce seizures in patients with drug-resistant epilepsy, and in a small percentage of patients it has rendered them seizure-free when surgical resection is not feasible. While polytherapy with antiseizure medication is not uncommon, dual neurostimulation has received limited attention. We set out to identify trends and changes in the use of dual neurostimulation to understand choosing device combinations.
    Methods: We reviewed the Mayo Clinic database in Florida of patients who underwent vagus nerve stimulation (VNS), deep brain stimulation (DBS), and responsive neurostimulation (RNS) from October 1998 through September 2021. The prevalence of active VNS with DBS or RNS was considered dual therapy.
    Results: In total, 131 patients (71 female) underwent 164 VNS-associated procedures, 28 received RNS, and 8 received DBS (6 anterior thalamic DBS; 2 thalamic centromedian nucleus DBS). Active dual stimulation occurred in 3 of 28 patients who received RNS and 8 of 8 patients who received DBS (P = 0.006), mean duration of 28 and 16.3 months, respectively. Patients who received VNS-DBS were more likely to have a previous response to VNS (P = 0.025) and were unresponsive to more antiseizure medications (P = 0.020). The VNS-RNS group had focal seizures more likely to have electroclinical localization (P = 0.005) and more frequently underwent invasive electroencephalographic monitoring (P = 0.026).
    Conclusions: The ability to localize was the primary decision-maker in prompting RNS versus DBS. RNS surgery was more likely to be preceded by invasive electroencephalographic monitoring. Previous VNS responsiveness was more prominent in patients with DBS. Dual therapy was safe. Prospective multicenter studies of dual-device neuromodulation are needed.
    MeSH term(s) Epilepsy/therapy ; Female ; Humans ; Intralaminar Thalamic Nuclei ; Male ; Prospective Studies ; Seizures ; Vagus Nerve Stimulation
    Language English
    Publishing date 2022-02-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2534351-8
    ISSN 1878-8769 ; 1878-8750
    ISSN (online) 1878-8769
    ISSN 1878-8750
    DOI 10.1016/j.wneu.2022.02.057
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Frailty as a Predictor of Postoperative Morbidity and Mortality in Patients Aged 80 Years and Older Undergoing Instrumented Fusion.

    Moniz-Garcia, Diogo / Odeh, Nour / Genel, Oktay / Montaser, Alaa / Sousa-Pinto, Bernardo / De Biase, Gaetano / Otamendi-Lopez, Andrea / Nottmeier, Eric / Bydon, Mohamad / McClendon, Jamal / Buchanan, Ian A / Pirris, Stephen / Abode-Iyamah, Kingsley / Chen, Selby

    Operative neurosurgery (Hagerstown, Md.)

    2024  

    Abstract: Background and objectives: Degenerative spine disease is a leading cause of disability, with increasing prevalence in the older patients. While age has been identified as an independent predictor of outcomes, its predictive value is limited for similar ... ...

    Abstract Background and objectives: Degenerative spine disease is a leading cause of disability, with increasing prevalence in the older patients. While age has been identified as an independent predictor of outcomes, its predictive value is limited for similar older patients. Here, we aimed to determine the most predictive frailty score of adverse events in patients aged 80 and older undergoing instrumented lumbar fusion.
    Methods: We proceeded with a multisite (3 tertiary academic centers) retrospective review including patients undergoing instrumented fusion aged 80 and older from January 2010 to present. A composite end point encompassing 30-day return to operating room, readmission, and mortality was created. We estimated the area under the receiver operating characteristic curve for frailty scores (Modified Frailty Index-5 [MFI-5], Modified Frailty Index-11 [MFI-11], and Charlson Comorbidity Index [CCI]) in relation to that composite score. In addition, we estimated the association between each score and the composite end point by means of logistic regression.
    Results: A total of 153 patients with an average age of 85 years at the time of surgery were included. We observed a 30-day readmission rate of 11.1%, reoperation of 3.9%, and mortality of 0.6%. The overall rate of the composite end point at 30 days was 25 (15.1%). The AUC for MFI-5 was 0.597 (0.501-0.693), for MFI-11 was 0.620 (0.518-0.723), and for CCI was 0.564 (0.453-0.675). The association between the scores and composite end point did not reach statistical significance for MFI-5 (odds ratio [OR] = 1.45 [0.98-2.15], P = .061) and CCI (OR = 1.13 [0.97-1.31], P = .113) but was statistically significant for MFI-11 (OR = 1.46 [1.07-2.00], P = .018).
    Conclusion: This is the largest study comparing frailty index scores in octogenarians undergoing instrumented lumbar fusion. Our findings suggest that while MFI-11 score correlated with adverse events, the predictive ability of existing scores remains limited, highlighting the need for better approaches to identify select patients at age extremes.
    Language English
    Publishing date 2024-01-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2767575-0
    ISSN 2332-4260 ; 2332-4252
    ISSN (online) 2332-4260
    ISSN 2332-4252
    DOI 10.1227/ons.0000000000001040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: From the Operating Room to the Laboratory: Role of the Neuroscience Tissue Biorepository in the Clinical, Translational, and Basic Science Research Pipeline.

    Quiñones-Hinojosa, Alfredo / Basil, Aleeshba / Moniz-Garcia, Diogo / Suarez-Meade, Paola / Ramos, Andres / Jentoft, Mark / Middlebrooks, Erik / Grewal, Sanjeet / Abode-Iyamah, Kingsley / Bydon, Mohamad / Sarkaria, Jann / Dickson, Dennis / Swanson, Kristin / Rosenfeld, Steven / Schiapparelli, Paula / Guerrero-Cazares, Hugo / Chaichana, Kaisorn / Meyer, Fredric

    Mayo Clinic proceedings

    2024  Volume 99, Issue 2, Page(s) 229–240

    Abstract: Objective: To establish a neurologic disorder-driven biospecimen repository to bridge the operating room with the basic science laboratory and to generate a feedback cycle of increased institutional and national collaborations, federal funding, and ... ...

    Abstract Objective: To establish a neurologic disorder-driven biospecimen repository to bridge the operating room with the basic science laboratory and to generate a feedback cycle of increased institutional and national collaborations, federal funding, and human clinical trials.
    Methods: Patients were prospectively enrolled from April 2017 to July 2022. Tissue, blood, cerebrospinal fluid, bone marrow aspirate, and adipose tissue were collected whenever surgically safe. Detailed clinical, imaging, and surgical information was collected. Neoplastic and nonneoplastic samples were categorized and diagnosed in accordance with current World Health Organization classifications and current standard practices for surgical pathology at the time of surgery.
    Results: A total of 11,700 different specimens from 813 unique patients have been collected, with 14.2% and 8.5% of patients representing ethnic and racial minorities, respectively. These include samples from a total of 463 unique patients with a primary central nervous system tumor, 88 with metastasis to the central nervous system, and 262 with nonneoplastic diagnoses. Cerebrospinal fluid and adipose tissue dedicated banks with samples from 130 and 16 unique patients, respectively, have also been established. Translational efforts have led to 42 new active basic research projects; 4 completed and 6 active National Institutes of Health-funded projects; and 2 investigational new drug and 5 potential Food and Drug Administration-approved phase 0/1 human clinical trials, including 2 investigator initiated and 3 industry sponsored.
    Conclusion: We established a comprehensive biobank with detailed notation with broad potential that has helped us to transform our practice of research and patient care and allowed us to grow in research and clinical trials in addition to providing a source of tissue for new discoveries.
    MeSH term(s) Humans ; Operating Rooms ; Biological Specimen Banks
    Language English
    Publishing date 2024-02-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 124027-4
    ISSN 1942-5546 ; 0025-6196
    ISSN (online) 1942-5546
    ISSN 0025-6196
    DOI 10.1016/j.mayocp.2023.10.016
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Conference proceedings: Expanded Endoscopic Endonasal Approach for Resection of a Recurrent Craniopharyngioma

    Almeida, Joao Paulo / Marenco-Hillembrand, Lina / Moniz-Garcia, Diogo / Goyal, Anshit / Olomu, Osarenoma U. / Quinones-Hinojosa, Alfredo

    Journal of Neurological Surgery Part B: Skull Base

    2023  Volume 84, Issue S 01

    Event/congress 32nd Annual Meeting North American Skull Base Society, JW Marriott Tampa Water Street, Tampa, Florida, United States, 2023-02-17
    Language English
    Publishing date 2023-02-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article ; Conference proceedings
    ZDB-ID 2654269-9
    ISSN 2193-634X ; 2193-6331
    ISSN (online) 2193-634X
    ISSN 2193-6331
    DOI 10.1055/s-0043-1762506
    Database Thieme publisher's database

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  10. Article ; Online: Enhanced sensitivity of electrocorticography during awake craniotomy using a novel circular grid electrode.

    Freund, Brin E / Feyissa, Anteneh M / Khan, Aafreen / Sirven, Joseph I / Grewal, Sanjeet S / Sabsevitz, David / Moniz-Garcia, Diogo / Quinones-Hinojosa, Alfredo / Tatum, William O

    Journal of neuro-oncology

    2023  Volume 165, Issue 2, Page(s) 313–320

    Abstract: Purpose: Awake craniotomy with intraoperative functional brain mapping (FBM) bedside neurological testing is an important technique used to optimize resective brain surgeries near eloquent cortex. Awake craniotomy performed with electrocorticography ( ... ...

    Abstract Purpose: Awake craniotomy with intraoperative functional brain mapping (FBM) bedside neurological testing is an important technique used to optimize resective brain surgeries near eloquent cortex. Awake craniotomy performed with electrocorticography (ECoG) and direct electrical stimulation (DES) for FBM can delineate eloquent cortex from lesions and epileptogenic regions. However, current electrode technology demonstrates spatial limitations. Our group has developed a novel circular grid with the goal of improving spatial recording of ECoG to enhance detection of ictal and interictal activity.
    Methods: This retrospective study was approved by the institutional review board at Mayo Clinic Florida. We analyzed patients undergoing awake craniotomy with ECoG and DES and compared ECoG data obtained using the 22 contact circular grid to standard 6 contact strip electrode.
    Results: We included 144 cases of awake craniotomy with ECoG, 73 using circular grid and 71 with strip electrode. No significant differences were seen regarding preoperative clinical and demographic data, duration of ECoG recording (p = 0.676) and use of DES (p = 0.926). Circular grid was more sensitive in detecting periodic focal epileptiform discharges (PFEDs) (p = 0.004), PFEDs plus (p = 0.032), afterdischarges (ADs) per case (p = 0.022) at lower minimum (p = 0.012) and maximum (p < 0.0012) intensity stimulation, and seizures (p = 0.048). PFEDs (p < 0.001), PFEDs plus (p < 0.001), and HFOs (p < 0.001) but not ADs (p = 0.255) predicted electrographic seizures.
    Conclusion: We demonstrate higher sensitivity in detecting ictal and interictal activity on ECoG during awake craniotomy with a novel circular grid compared to strip electrode, likely due to better spatial sampling during ECoG. We also found association between PFEDs and intraoperative seizures.
    MeSH term(s) Humans ; Electrocorticography/methods ; Wakefulness ; Retrospective Studies ; Seizures/diagnosis ; Seizures/surgery ; Craniotomy/methods ; Brain Mapping/methods ; Electrodes
    Language English
    Publishing date 2023-11-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604875-4
    ISSN 1573-7373 ; 0167-594X
    ISSN (online) 1573-7373
    ISSN 0167-594X
    DOI 10.1007/s11060-023-04495-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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