1. Department of Pediatrics, University of Florida College of Medicine, Children’s Medical Services Center (A.R.), 1701 SW 16th Avenue, Gainesville, Florida 32608
2. Institute of Endocrinology Metabolism and Reproduction (J.G-A.), Quito, Ecuador
3. Department of Genetics and Howard Hughes Medical Institute, Stanford University Medical Center (M.S.B., U.F.), Stanford, California 94305-5323