1. Division of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School , Boston, Massachusetts , USA
2. Division of Endocrinology and Metabolism, Faculty of Medicine, Chulalongkorn University, and King Chulalongkorn Memorial Hospital, Thai Red Cross Society , Bangkok , Thailand
3. Division of General Internal Medicine, Faculty of Medicine, Chulalongkorn University, and King Chulalongkorn Memorial Hospital, Thai Red Cross Society , Bangkok , Thailand