1. Division of Endocrinology and Metabolism (M.H.S., S.E.P., E.J.R., C.Y.P., K.W.O., S.W.P., S.W.K., W.-Y.L.), Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea 110-746
2. Division of Endocrinology and Metabolism (J.C.B.), Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea 135-710