1. Endocrine Unit, Department of Medicine, Tan Tock Seng Hospital (K.-C.L.), Rochester, Minnesota 55905
2. Department of Pathology, National University of Singapore (E.S.K., M.-C.K.), Rochester, Minnesota 55905
3. Family Health Service, Ministry of Health (S.C.E.), Republic of Singapore, Rochester, Minnesota 55905
4. Department of Medicine, Mayo Clinic (W.F.Y.), Rochester, Minnesota 55905