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Association of tumor necrosis with pathological features and clinical outcome in 754 patients undergoing radical nephroureterectomy for upper tract urothelial carcinoma: an international validation study. J Urol 2010; 184: 1895\u2013900.","DOI":"10.1016\/j.juro.2010.06.106"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15) Karsch-Bluman A, Feiglin A, Arbib E, et al. Tissue necrosis and its role in cancer progression. Oncogene 2019; 38: 1920\u201335.","DOI":"10.1038\/s41388-018-0555-y"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16) Suster S, Moran CA. Thymic carcinoma: spectrum of differentiation and histologic types. Pathol  1998; 30: 111\u2013122.","DOI":"10.1080\/00313029800169056"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17) Marx A, Chan JK, Coindre JM, et al. The 2015 World Health Organization classification of tumors of the thymus: continuity and changes. 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