1 Department of Pediatrics, Endocrinology Section, University of California Davis, Sacramento, California 95817.
2 Division of Pediatric Endocrinology, Metabolism & Diabetes Mellitus, Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania 15224.
3 Division of Pediatric Endocrinology and Diabetes, Adolescent PCOS Clinic, American Family Children's Hospital, University of Wisconsin, Madison, Wisconsin 53792.
4 Metabolic Research Laboratories, University of Cambridge, Cambridge CB2 0QQ, United Kingdom.
5 Gonda Vascular Center and Division of Preventive, Occupational and Aerospace Medicine, Mayo Clinic, Rochester, Minnesota 55905.
6 Division of Endocrinology, University of Florida, Gainesville, Florida 32607.
7 Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892.