机构:EGA Institute for Women’s Health, Faculty of Population Health Sciences, University College London (UCL), London WC1E 6HX, UK,The Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China
机构:Department of Obstetrics and Gynecology, Centre Hospitalier Universitaire de Liège, Site CHR Citadelle, 4000, Liège, Belgium,Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China