[1] NICHHD, SURG NEUROL BRANCH, BETHESDA, MD 20205 USA
[2] UNIV VIRGINIA, MED CTR, DEPT INTERNAL MED, DIV ENDOCRINOL & METAB, CHARLOTTESVILLE, VA 22908 USA
[3] TUFTS UNIV, NEW ENGLAND MED CTR, DIV ENDOCRINOL, BOSTON, MA 02111 USA
[4] UNIV CINCINNATI, MED CTR, DEPT INTERNAL MED, DIV ENDOCRINOL & METAB, CINCINNATI, OH 45267 USA
[5] SALK INST BIOL STUDIES, PEPTIDE BIOL LAB, SAN DIEGO, CA 92138 USA