Sungkyunkwan University - Department of Occupational and Environmental Medicine, Sungkyunkwan University - Kangbuk Samsung Hospital, Seoul National University - Seoul National University Hospital, Seoul National University - Seoul National University Hospital, Sungkyunkwan University - Kangbuk Samsung Hospital, MEDICAL IP, Co., Ltd, MEDICAL IP, Co., Ltd, MEDICAL IP, Co., Ltd, Sungkyunkwan University - Kangbuk Samsung Hospital, Sungkyunkwan University - Kangbuk Samsung Hospital, Sungkyunkwan University - Kangbuk Samsung Hospital, Sungkyunkwan University - Samsung Advanced Institute of Health Sciences and Technology (SAIHST) and Sungkyunkwan University - Kangbuk Samsung Hospital

affiliation not provided to SSRN, Seoul National University - Department of Obstetrics and Gynecology, Seoul National University - Seoul National University Bundang Hospital, Seoul National University - Seoul National University Hospital, Seoul National University - Seoul National University Hospital, Seoul National University - Seoul National University Bundang Hospital, Seoul National University, Seoul National University - Seoul National University Bundang Hospital, Seoul National University - Seoul National University Bundang Hospital, Seoul National University - Seoul National University Hospital, Seoul National University - Department of Obstetrics and Gynecology, Seoul National University - College of Medicine and Seoul National University - Department of Obstetrics and Gynecology