1. Endocrine Research Unit (J.D.V.), Mayo Medical School, Mayo School of Graduate Medical Education, Center for Translational Science Activities, Mayo Clinic, Rochester, Minnesota 55905
2. Department of Endocrinology and Metabolic Diseases (F.R.), Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
3. Endocrine Section (A.I.), Medical Service, Salem Veterans Affairs Medical Center, Salem, Virginia 24153
4. Pacific Behavioral Research Foundation (B.J.C.), Carmel, California 93922
5. Department of Statistics (D.M.K.), University of Virginia, Charlottesville, Virginia 22904
6. Independent Mathematician (S.M.P.), Guilford, Connecticut 06437