The Chinese University of Hong Kong (CUHK), Hanoi Obstetrics and Gynecology Hospital, The Chinese University of Hong Kong (CUHK), Hanoi Obstetrics and Gynecology Hospital, CRIFM Prenatal Medical Clinic, Toyama University Hospital, Nanjing University, Nanjing University - Drum Tower Hospital, Department of Obstetrics and GynecologyNanjing University - Center for Reproductive Medicine, Kunming Medical University - Department of Obstetrics and Gynecology, Harapan Kita Women and Children Hospital, affiliation not provided to SSRN, National University of Singapore (NUS) - National University Hospital, Showa Medical University - Showa University Hospital, Chiang Mai University, Taiji Clinic, Chulalongkorn University - King Chulalongkorn Memorial Hospital, Thammasat University, Guangzhou Medical University - Guangzhou Key Laboratory of Maternal-Fetal Medicine, Chang Gung University - Chang Gung Memorial Hospital, Government of the Hong Kong Special Administrative Region - Kwong Wah Hospital, Universiti Kebangsaan Malaysia, University of the Philippines, Manila - Philippine General Hospital, The Chinese University of Hong Kong (CUHK), The Chinese University of Hong Kong (CUHK), The Chinese University of Hong Kong (CUHK), Prince of Wales Hospital, The Chinese University of Hong Kong (CUHK), The Chinese University of Hong Kong (CUHK), The Chinese University of Hong Kong (CUHK) - School of Public Health and Primary Care and Prince of Wales Hospital

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