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  1. AU="Ishii, Masayuki"
  2. AU="Bonin Pinto, Camila"
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  1. Article ; Online: Fistula formation into other organs secondary to intraductal papillary mucinous neoplasm of the pancreas: A case report and literature review.

    Shishido, Yutaka / Mitsuoka, Eisei / Ito, Rieko / Ishii, Masayuki / Fujimoto, Koji

    Medicine

    2023  Volume 102, Issue 27, Page(s) e34288

    Abstract: Introduction: Fistula formation from intraductal papillary mucinous neoplasm (IPMN) of the pancreas is uncommon; however, IPMN penetrating various organs has been increasingly reported. To date, there is a lack of literature reviewing recent reports and ...

    Abstract Introduction: Fistula formation from intraductal papillary mucinous neoplasm (IPMN) of the pancreas is uncommon; however, IPMN penetrating various organs has been increasingly reported. To date, there is a lack of literature reviewing recent reports and the clinicopathologic details of IPMN with fistula formation are still poorly understood.
    Methods: This study describes the case of a 60-year-old woman presenting with postprandial epigastric pain and diagnosed with main-duct (MD) IPMN penetrating to the duodenum, and presents comprehensive literature review of IPMN with fistulae. A literature review was performed using PubMed for all articles in English using predetermined search terms, including (fistula or fistulization), (pancreas or pancreatic or pancreato or pacreatico), (intraductal papillary mucinous), and (neoplasm or tumor or carcinoma or cancer).
    Results: A total of 83 cases and 119 organs were identified in 54 articles. Affected organs were as follows: the stomach (34%), duodenum (30%), bile duct (25%), colon (5%), small intestine (3%), spleen (2%), portal vein (1%), and chest wall (1%). Fistula formation into multiple organs was detected in 35% of cases. Approximately one-third of the cases had tumor invasion around the fistula. MD and mixed type IPMN accounted for 82% of cases. IPMN with high-grade dysplasia or invasive carcinoma were over three times more common than IPMN without these components.
    Discussion and conclusion: Based on the pathological examination of the surgical specimen, this case was diagnosed of MD-IPMN with invasive carcinoma and mechanical penetration or autodigestion was considered as the mechanism of fistula formation. Given the high risk of malignant transformation and intraductal dissemination of the tumor cells, aggressive surgical strategies, such as total pancreatectomy, should be recommended to achieve complete resection for MD-IPMN with fistula formation.
    MeSH term(s) Female ; Humans ; Middle Aged ; Carcinoma, Pancreatic Ductal/complications ; Carcinoma, Pancreatic Ductal/surgery ; Carcinoma, Pancreatic Ductal/diagnosis ; Pancreatic Intraductal Neoplasms ; Pancreatic Neoplasms/complications ; Pancreatic Neoplasms/surgery ; Pancreatic Neoplasms/diagnosis ; Pancreas/pathology ; Pancreatectomy ; Fistula/surgery
    Language English
    Publishing date 2023-07-07
    Publishing country United States
    Document type Review ; Case Reports ; Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000034288
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: [A Case of Long-Term Response to Chemotherapy in Mucinous Carcinoma of the Duodenum with Multiple Distant Metastases].

    Komatsubara, Takashi / Fujimoto, Koji / Miyabe, Hideaki / Tanigawa, Yuma / Kumode, Wataru / Mitsuoka, Eisei / Maeda, Tetsuo / Ishii, Masayuki

    Gan to kagaku ryoho. Cancer & chemotherapy

    2024  Volume 51, Issue 2, Page(s) 175–178

    Abstract: Primary carcinoma of the duodenum, especially mucinous carcinoma of the duodenum, is extremely rare. We present a case of a long-term response to chemotherapy in mucinous carcinoma of the duodenum with multiple distant metastases. A 60-year-old man was ... ...

    Abstract Primary carcinoma of the duodenum, especially mucinous carcinoma of the duodenum, is extremely rare. We present a case of a long-term response to chemotherapy in mucinous carcinoma of the duodenum with multiple distant metastases. A 60-year-old man was admitted to our hospital with epigastric pain and jaundice. CT showed a thickening of the duodenal wall; extensive lymphadenopathy around the head of the pancreas, in the para-aortic region and the mediastinum; suspected peritoneal dissemination; lung metastases; and bone metastases. An upper gastrointestinal endoscopy revealed a duodenal stenosis in the descending limb with irregular mucosa, and a diagnosis of mucinous carcinoma of the duodenum was made on the basis of the histological analysis of the biopsy sample. Double bypass surgery involving a choledochojejunostomy and gastrojejunostomy were performed for obstruction of the duodenum and common bile duct. After FOLFOXIRI therapy was initiated, the tumors were reduced markedly. Despite withdrawal after 28 courses of chemotherapy, the patient achieved a long-term response for 10 years after the initiation of chemotherapy.
    MeSH term(s) Male ; Humans ; Middle Aged ; Duodenum ; Abdominal Pain ; Choledochostomy ; Cognition ; Common Bile Duct
    Language Japanese
    Publishing date 2024-03-07
    Publishing country Japan
    Document type Case Reports ; English Abstract ; Journal Article
    ZDB-ID 604842-0
    ISSN 0385-0684
    ISSN 0385-0684
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Perspectives for circulating tumor DNA in clinical management of colorectal cancer.

    Takemasa, Ichiro / Hamabe, Atsushi / Ishii, Masayuki

    International journal of clinical oncology

    2021  Volume 26, Issue 8, Page(s) 1420–1430

    Abstract: Growing evidence has demonstrated that circulating tumor DNA (ctDNA) detection in colorectal cancer might be a promising approach to address current important clinical questions. During chemotherapy for metastatic colorectal cancer, tumor cells acquire ... ...

    Abstract Growing evidence has demonstrated that circulating tumor DNA (ctDNA) detection in colorectal cancer might be a promising approach to address current important clinical questions. During chemotherapy for metastatic colorectal cancer, tumor cells acquire potential resistance by generating additional somatic mutations related to therapeutic resistance. ctDNA can capture the tumor landscape, including heterogeneity, which might provide the opportunity for additional treatment options. Moreover, ctDNA detection is advantageous, because it can monitor tumor heterogeneity serially, in a non-invasive manner. ctDNA is considered valid for detecting minimal residual disease after a curable resection. By utilizing ctDNA detection, adjuvant chemotherapy for patients with stage II-III colorectal cancer might be omitted for patients at low risk of recurrence; or conversely, adjuvant chemotherapy might be highly recommended for patients at high risk, based on ctDNA findings. During multidisciplinary treatments for locally advanced rectal cancer, it is essential to monitor the responses to sequential treatments to make appropriate decisions. Currently, these decisions are mainly based on radiological or pathological findings. ctDNA can add value by providing the real-time status of locally advanced rectal cancer. In this review, we summarized the current evidence and discussed future strategies for using ctDNA in the treatment of colorectal cancer.
    Language English
    Publishing date 2021-06-29
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 1400227-9
    ISSN 1437-7772 ; 1341-9625
    ISSN (online) 1437-7772
    ISSN 1341-9625
    DOI 10.1007/s10147-021-01937-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Duodenal ulcer bleeding from a branch of the middle colic artery: A case report.

    Shishido, Yutaka / Mitsuoka, Eisei / Tanigawa, Yuma / Ooki, Hodaka / Shio, Seiji / Monzawa, Shuichi / Ishii, Masayuki / Fujimoto, Koji

    Medicine

    2023  Volume 102, Issue 44, Page(s) e35955

    Abstract: Rationale: Duodenal ulcer bleeding is a potentially life-threatening condition commonly caused by the erosion of the duodenal arteries.: Patient concerns: A 55-year-old male was referred to our hospital with abdominal pain for the past 3 days. ... ...

    Abstract Rationale: Duodenal ulcer bleeding is a potentially life-threatening condition commonly caused by the erosion of the duodenal arteries.
    Patient concerns: A 55-year-old male was referred to our hospital with abdominal pain for the past 3 days. Contrast-enhanced computed tomography of the abdomen revealed wall thickening in the descending part of the duodenum and a cystic lesion (27 × 19 mm) contiguous with the duodenum, with an accumulation of fluid. An esophagogastroduodenoscopy showed the significantly stenotic duodenum, which prevented passage of the endoscope and evaluation of the main lesion. Based on these findings, duodenal ulcer perforation and concomitant abscess formation were suspected. Two days after admission, he had massive hematochezia with bloody drainage from the nasogastric tube.
    Diagnoses: Emergency angiography revealed duodenal ulcer bleeding from the gastroduodenal artery and the branch artery of the inferior pancreaticoduodenal artery and middle colic artery (MCA).
    Interventions: The patient was treated with transcatheter arterial embolization (TAE) of the gastroduodenal artery, the branch vessel of the inferior pancreaticoduodenal artery, and the main trunk of the MCA.
    Outcomes: Hemostasis was achieved with TAE. The patient recovered uneventfully and undergone a gastro-jejunal bypass surgery for the duodenal stenosis 2 weeks after TAE. He was discharged without any abnormal complaints on postoperative day 12.
    Lessons: We have experienced a rare case of duodenal ulcer bleeding from a branch of the MCA. In patients with refractory upper gastrointestinal bleeding, careful evaluation of bleeding sites is recommended considering unexpected culprit vessels.
    MeSH term(s) Male ; Humans ; Middle Aged ; Duodenal Ulcer/complications ; Mesenteric Artery, Inferior ; Peptic Ulcer Hemorrhage/therapy ; Duodenum ; Gastrointestinal Hemorrhage/therapy ; Mesenteric Artery, Superior ; Embolization, Therapeutic/methods
    Language English
    Publishing date 2023-11-06
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000035955
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Survival outcomes of lung metastases from colorectal cancer treated with pulmonary metastasectomy or modern systemic chemotherapy: a single institution experience.

    Shishido, Yutaka / Ishii, Masayuki / Maeda, Tetsuo / Kokado, Yujiro / Masuya, Daiki / Kusama, Toshiyuki / Fujimoto, Koji / Higashiyama, Hiroshi

    Journal of cardiothoracic surgery

    2023  Volume 18, Issue 1, Page(s) 327

    Abstract: Background: Although pulmonary metastasectomy is an accepted treatment strategy for resectable lung metastases (LM) from colorectal cancer (CRC), its survival benefits are controversial. In contrast, recent advancements in chemotherapy have ... ...

    Abstract Background: Although pulmonary metastasectomy is an accepted treatment strategy for resectable lung metastases (LM) from colorectal cancer (CRC), its survival benefits are controversial. In contrast, recent advancements in chemotherapy have significantly improved metastatic CRC prognosis. This study aimed to evaluate survival outcome of LM from CRC in the age of newly developed chemotherapy.
    Methods: We retrospectively reviewed 50 patients who underwent complete resection and 22 patients who received chemotherapy as definitive treatment for LM from resected CRC at our hospital. The present study was limited to patients who started treatment for isolated LM after molecular targeted drugs became available in Japan.
    Results: Overall survival (OS), cancer-specific survival (CSS), disease-free survival (DFS) rates after pulmonary resection were 64.5%, 66.4%, and 32.6% at five years, respectively. OS and CSS rates of chemotherapy patients were 26.8% and 28.3% at five years, with a median progression-free survival time of 10.0 months. When compared the characteristics of surgical and chemotherapy patients, patients with pN factors of CRC (p = 0.013), smaller size (p < 0.001), larger number (p < 0.001), and bilateral (p < 0.001) LM received chemotherapy. Univariate analysis showed that multiple LM and rectal lesions were poor prognostic factors for OS (p = 0.012) and DFS (p = 0.017) in surgical patients, and rectal lesions were a poor prognostic factor for OS (p = 0.013) in chemotherapy patients.
    Conclusions: Pulmonary metastasectomy showed a favorable survival in patients with LM from CRC. Despite the high recurrence rate after metastasectomy and recent advances in chemotherapy, surgical resection could still be considered as a valid option among multidisciplinary treatments.
    Trial registration: The research plan was approved by the Institutional Review Board of Shinko Hospital (No. 2142) on February 7, 2022.
    MeSH term(s) Humans ; Treatment Outcome ; Metastasectomy ; Retrospective Studies ; Colorectal Neoplasms/drug therapy ; Colorectal Neoplasms/pathology ; Prognosis ; Disease-Free Survival ; Pneumonectomy ; Lung Neoplasms/drug therapy ; Lung Neoplasms/surgery ; Survival Rate
    Language English
    Publishing date 2023-11-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2227224-0
    ISSN 1749-8090 ; 1749-8090
    ISSN (online) 1749-8090
    ISSN 1749-8090
    DOI 10.1186/s13019-023-02434-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: CD8-positive T Cell Infiltration With Human Leukocyte Antigen Class 1 Expression Predicts Patients With Stage IV Colorectal Cancer Survival.

    Satoyoshi, Tetsuta / Hirohashi, Yoshihiko / Okuya, Koichi / Miyo, Masaaki / Akizuki, Emi / Ishii, Masayuki / Miura, Ryo / Kubo, Terufumi / Murata, Kenji / Kanaseki, Takayuki / Tsukahara, Tomohide / Takemasa, Ichiro / Torigoe, Toshihiko

    Anticancer research

    2024  Volume 44, Issue 4, Page(s) 1603–1610

    Abstract: Background/aim: The immune microenvironment in cancer correlates with cancer progression and patient prognosis. Cancer immune microenvironment evaluation, based on CD3: Patients and methods: We analyzed the immune microenvironment of patients with ... ...

    Abstract Background/aim: The immune microenvironment in cancer correlates with cancer progression and patient prognosis. Cancer immune microenvironment evaluation, based on CD3
    Patients and methods: We analyzed the immune microenvironment of patients with stage IV CRC using immunohistochemical (IHC) staining. We evaluated the expressions of CD8 and the cases were divided into CD8 high (CD8
    Results: CD8
    Conclusion: The combination of CD8
    MeSH term(s) Humans ; Lymphocytes, Tumor-Infiltrating ; Colorectal Neoplasms/pathology ; CD8-Positive T-Lymphocytes ; Histocompatibility Antigens Class I/metabolism ; Prognosis ; HLA Antigens ; Tumor Microenvironment
    Chemical Substances Histocompatibility Antigens Class I ; HLA Antigens
    Language English
    Publishing date 2024-03-25
    Publishing country Greece
    Document type Multicenter Study ; Journal Article
    ZDB-ID 604549-2
    ISSN 1791-7530 ; 0250-7005
    ISSN (online) 1791-7530
    ISSN 0250-7005
    DOI 10.21873/anticanres.16958
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Cylindrical abdominoperineal resection for rectal cancer using the Hugo RAS system: The first ever case report for rectal cancer.

    Toyota, Maho / Miyo, Masaaki / Okuya, Koichi / Ito, Tatsuya / Akizuki, Emi / Noda, Ai / Ogawa, Tadashi / Ishii, Masayuki / Miura, Ryo / Ichihara, Momoko / Kimura, Akina / Takemasa, Ichiro

    Asian journal of endoscopic surgery

    2024  Volume 17, Issue 3, Page(s) e13321

    Abstract: In May 2023, the Hugo RAS system obtained pharmaceutical approval for use in gastroenterological surgery in Japan. It is expected to be particularly effective in rectal cancer surgery, which require the manipulation of the deep pelvic cavity and ... ...

    Abstract In May 2023, the Hugo RAS system obtained pharmaceutical approval for use in gastroenterological surgery in Japan. It is expected to be particularly effective in rectal cancer surgery, which require the manipulation of the deep pelvic cavity and communication with surgeons operating from the intraperitoneal and anal approaches. A 68-year-old woman presented to our hospital with bloody stools and was diagnosed with cStage I (cT2N0M0) rectal cancer and underwent abdominoperineal resection employing the Hugo RAS system. Two arm carts were placed on the left and right lateral sides with an interleg space, and trocars were placed in a straight line between the right superior iliac spine and umbilicus. Herein, we report the first abdominoperineal resection for rectal cancer using the Hugo RAS system.
    MeSH term(s) Humans ; Rectal Neoplasms/surgery ; Rectal Neoplasms/pathology ; Female ; Aged ; Proctectomy/methods ; Adenocarcinoma/surgery ; Adenocarcinoma/pathology
    Language English
    Publishing date 2024-05-13
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 2503256-2
    ISSN 1758-5910 ; 1758-5902
    ISSN (online) 1758-5910
    ISSN 1758-5902
    DOI 10.1111/ases.13321
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Surgical anatomy of the pelvis for total pelvic exenteration with distal sacrectomy: a cadaveric study.

    Ishii, Masayuki / Shimizu, Atsushi / Lefor, Alan Kawarai / Noda, Yasuko

    Surgery today

    2020  Volume 51, Issue 4, Page(s) 627–633

    Abstract: Purpose: Intraoperative bleeding from the pelvic venous structures is one of the most serious complications of total pelvic exenteration with distal sacrectomy. The purpose of this study was to investigate the topographic anatomy of these veins and the ... ...

    Abstract Purpose: Intraoperative bleeding from the pelvic venous structures is one of the most serious complications of total pelvic exenteration with distal sacrectomy. The purpose of this study was to investigate the topographic anatomy of these veins and the potential source of the bleeding in cadaver dissections.
    Methods: We dissected seven cadavers, focusing on the veins in the surgical resection line for total pelvic exenteration with distal sacrectomy.
    Results: The presacral venous plexus and the dorsal vein complex are thin-walled, plexiform, and situated on the line of resection. The internal iliac vein receives blood from the pelvic viscera and the perineal and the gluteal regions and then crosses the line of resection as a high-flow venous system. It has abundant communications with the presacral venous plexus and the dorsal vein complex.
    Conclusion: The anatomical features of the presacral venous plexus, the dorsal vein complex, and the internal iliac vein make them highly potential sources of bleeding. Surgical management strategies must consider the anatomy and hemodynamics of these veins carefully to perform this procedure safely.
    MeSH term(s) Blood Loss, Surgical/prevention & control ; Cadaver ; Hemodynamics ; Humans ; Iliac Vein/anatomy & histology ; Iliac Vein/physiology ; Pelvic Exenteration/methods ; Pelvis/blood supply ; Pelvis/surgery ; Veins/anatomy & histology ; Veins/physiology
    Language English
    Publishing date 2020-09-17
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1115435-4
    ISSN 1436-2813 ; 0941-1291
    ISSN (online) 1436-2813
    ISSN 0941-1291
    DOI 10.1007/s00595-020-02144-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Isolation and Expansion of Rat Hepatocytic Progenitor Cells.

    Kino, Junichi / Ichinohe, Norihisa / Ishii, Masayuki / Mitaka, Toshihiro

    Methods in molecular biology (Clifton, N.J.)

    2018  Volume 1905, Page(s) 29–41

    Abstract: This protocol showed procedures to isolate and expand small hepatocytes (SHs), as hepatocytic progenitor cells, from a rat liver. SHs are identified as a subpopulation of mature hepatocytes in a healthy liver. SHs can proliferate to form colonies in ... ...

    Abstract This protocol showed procedures to isolate and expand small hepatocytes (SHs), as hepatocytic progenitor cells, from a rat liver. SHs are identified as a subpopulation of mature hepatocytes in a healthy liver. SHs can proliferate to form colonies in serum-free medium on hyaluronic acid-coated dishes, of which cells show CD44 positivity (CD44
    MeSH term(s) Albumins/metabolism ; Animals ; Cell Culture Techniques/methods ; Cell Differentiation ; Cell Proliferation ; Cell Separation/methods ; Cells, Cultured ; Culture Media, Serum-Free/chemistry ; Hepatocyte Nuclear Factor 4/metabolism ; Hepatocytes/cytology ; Hepatocytes/metabolism ; Hyaluronan Receptors/metabolism ; Rats ; Stem Cells/cytology ; Stem Cells/metabolism
    Chemical Substances Albumins ; Culture Media, Serum-Free ; Hepatocyte Nuclear Factor 4 ; Hnf4a protein, rat ; Hyaluronan Receptors
    Language English
    Publishing date 2018-12-10
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-4939-8961-4_4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Artificial intelligence-based technology to make a three-dimensional pelvic model for preoperative simulation of rectal cancer surgery using MRI.

    Hamabe, Atsushi / Ishii, Masayuki / Kamoda, Rena / Sasuga, Saeko / Okuya, Koichi / Okita, Kenji / Akizuki, Emi / Miura, Ryo / Korai, Takahiro / Takemasa, Ichiro

    Annals of gastroenterological surgery

    2022  Volume 6, Issue 6, Page(s) 788–794

    Abstract: Aim: A new technique that allows visualization of whole pelvic organs with high accuracy and usability is needed for preoperative simulation in advanced rectal cancer surgery. In this study, we developed an automated algorithm to create a three- ... ...

    Abstract Aim: A new technique that allows visualization of whole pelvic organs with high accuracy and usability is needed for preoperative simulation in advanced rectal cancer surgery. In this study, we developed an automated algorithm to create a three-dimensional (3D) model from pelvic MRI using artificial intelligence (AI) technology.
    Methods: This study included a total of 143 patients who underwent 3D MRI in a preoperative examination for rectal cancer. The training dataset included 133 patients, in which ground truth labels were created for pelvic vessels, nerves, and bone. A 3D variant of U-net was used for the network architecture. Ten patients who underwent lateral lymph node dissection were used as a validation dataset. The correctness of the vascular labelling was assessed for pelvic vessels and the Dice similarity coefficients calculated for pelvic bone.
    Results: An automatic segmentation algorithm that extracts the artery, vein, nerve, and pelvic bone was developed, automatically producing a 3D image of the entire pelvis. The total time needed for segmentation was 133 seconds. The success rate of the AI-based segmentation was 100% for the common and external iliac vessels, but the rates for the vesical vein (75%), superior gluteal vein (60%), or accessory obturator vein (63%) were suboptimal. Regarding pelvic bone, the average Dice similarity coefficient between manual and automatic segmentation was 0.97 (standard deviation 0.0043).
    Conclusion: Though there is room to improve the segmentation accuracy, the algorithm developed in this study can be utilized for surgical simulation in the treatment of advanced rectal cancer.
    Language English
    Publishing date 2022-05-11
    Publishing country Japan
    Document type Journal Article
    ISSN 2475-0328
    ISSN (online) 2475-0328
    DOI 10.1002/ags3.12574
    Database MEDical Literature Analysis and Retrieval System OnLINE

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