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Malignant perivascular epithelioid cell tumor in the female genital tract: preferred reporting items for systematic reviews and meta-analyses. Medicine (Baltimore) 2019; 98: e14072.","DOI":"10.1097\/MD.0000000000014072"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11) Khaja F, Carilli A, Baidas S, et al. PEComa. a perivascular epithelioid cell tumor in the liver \u2014 a case report and review of the literature. Case Rep Med 2013; 2013: 904126.","DOI":"10.1155\/2013\/904126"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12) Fang SH, Zhou LN, Jin M, et al. Perivascular epithelioid cell tumor of the liver: a report of two cases and review of the literature. World J Gastroenterol 2007; 13: 5537\u20139.","DOI":"10.3748\/wjg.v13.i41.5537"},{"key":"13","unstructured":"13) Fletcher CD, Unni KK, Mertens F. World Health Organization classification of tumors of pathology and genetics of tumors of soft tissue and bone. 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