1 Reproductive Medicine, Department of Obstetrics and Gynecology, Chonburi Hospital, Chon Buri Province, Thailand.
2 Department of Surgery, Chonburi Hospital, Chonburi Province, Thailand.
3 Excellence Center in Diabetes, Hormone and Metabolism, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. Electronic address: Thiti.S@chula.ac.th.