Department of Gynecological Endocrinology Beijing Obstetrics and Gynecology Hospital Capital Medical University Yaojiayuan Road 251 Beijing 100026 China;
Department of Gynecological Endocrinology Beijing Obstetrics and Gynecology Hospital Capital Medical University Yaojiayuan Road 251 Beijing 100026 China;
Department of Women's Health University Hospital Tuebingen Calwer Strasse 7 Tuebingen 72076 Germany;
Department of Gynecological Endocrinology Beijing Obstetrics and Gynecology Hospital Capital Medical University Yaojiayuan Road 251 Beijing 100026 China;
John Rabe Communication Center Krehlstrasse 56 Heidelberg 69120 Germany;