[1] NORTHWESTERN UNIV, SCH MED, DEPT MED, ENDOCRINOL SECT, CHICAGO, IL 60611 USA
[2] NORTHWESTERN UNIV, SCH MED, DEPT MED, CLIN PHARMACOL SECT, CHICAGO, IL 60611 USA
[3] NIADDKD, NATL HORMONE & PITUITARY PROGRAM, BETHESDA, MD 21201 USA
[4] UNIV MARYLAND, SCH MED, BALTIMORE, MD 21201 USA
[5] TUFTS UNIV, SCH MED, DEPT MED, DIV ENDOCRINOL, BOSTON, MA 02111 USA
[6] NEW ENGLAND MED CTR, BOSTON, MA 02111 USA