Institution: | 1. Ningxia Medical University, Yinchuan, Ningxia, China 2. Department of Obstetrics and Gynecology in General Hospital, Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education, Ningxia Medical University, 804 Shengli South Street, Xingqing District, Yinchuan, Ningxia, 750004, China 3. Department of Pathology in General Hospital, Ningxia Medical University, Yinchuan, Ningxia, China
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