1. Pediatric Endocrine Unit (Y.T.-R.), Ha'Emek Medical Center, and Technion Faculty of Medicine, 31096 Haifa, Israel
2. Departments of Medicine (H.G., S.M., U.R., M.S.B., S.R.), The University of Chicago, Chicago, Illinois 60637
3. Institute of Interdisciplinary Research (L.M.), Free University of Brussels, 1070 Brussels, Belgium
4. Clalit Health Service (A.M.-H.D.), 30010 Um-El Fahem, Israel
5. Pediatrics and Committee on Genetics (S.R.), The University of Chicago, Chicago, Illinois 60637