1. Genetic Disease Research Branch (P.P.F., D.N., J.C.S., K.W., E.S., J.J.J., L.G.B.), National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892;
2. Section on Growth and Obesity (J.C.H., Y.C.Z., J.A.Y.), Program in Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892;
3. National Eye Institute (R.C.C., B.P.B.), National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20892