1. Division of Endocrinology (K.-C.L., F.S.G., P.P.B.Y.), Department of Medicine, University of California-San Francisco, San Francisco, California 94143
2. Endocrine Unit (K.-C.L.), Department of Medicine, Tan Tock Seng Hospital, Republic of Singapore
3. Biostatistics Consultancy Unit (F.D.), National University Medical Institute, Republic of Singapore
4. Department of Pathology (T.R.M.), University of California-San Francisco, San Francisco, California 94143