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Tumors of the thymus and thymic region: I. clinicopathological studies on thymomas. Ann Thorac Surg 1978; 25: 91\u20138.","DOI":"10.1016\/S0003-4975(10)63498-4"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6) Yoshimura N, Sato Y, Takeuchi H, et al. Thoracic and cardiovascular surgeries in Japan during 2021: annual report by the Japanese Association for Thoracic Surgery. Gen Thorac Cardiovasc Surg 2024; 72: 254\u201391.","DOI":"10.1007\/s11748-023-01997-6"},{"key":"7","doi-asserted-by":"crossref","unstructured":"7) Weis CA, Yao X, Deng Y, et al. The impact of thymoma histotype on prognosis in a worldwide database. J Thorac Oncol 2015; 10: 367\u201372.","DOI":"10.1097\/JTO.0000000000000393"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8) Marx A, Chan JKC, Chalabreysse L, et al. The 2021 WHO classification of tumors of the thymus and mediastinum: what is new in thymic epithelial, germ cell, and mesenchymal tumors? 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