1. Division of Maternal Fetal Medicine; Department of Obstetrics and Gynecology; Faculty of Medicine; Ramathibodi Hospital; Mahidol University; Bangkok Thailand
2. Division of Endocrinology; Department of Medicine; Faculty of Medicine; Ramathibodi Hospital; Mahidol University; Bangkok Thailand
3. Division of Endocrinology, Diabetes and Metabolism; Department of Medicine; University of Illinois at Chicago; Chicago Illinois USA