Department of Medicine, Vachira Phuket Hospital, Phuket, Thailand.Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.Department of Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.Hormonal and Metabolic Disorders Research Unit, Excellence Center for Diabetes, Hormone, and Metabolism, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.