1. Immunogenetics Section, Clinical Center, National Institutes of Health, Bethesda, Maryland.
2. Laboratory of Neurophysiology, Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, the Netherlands.
3. Section on Pediatric Diabetes and Metabolism
4. Section on Neuroendocrinology of Obesity, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland