[1] NEW ENGLAND MED CTR, DIV ENDOCRINE, BOSTON, MA 02111 USA
[2] TUFTS UNIV, SCH MED, DEPT MED, BOSTON, MA 02111 USA
[3] TUFTS UNIV, SCH MED, DEPT PATHOL, BOSTON, MA 02111 USA
[4] MASSACHUSETTS GEN HOSP, DEPT PEDIAT, BOSTON, MA 02114 USA
[5] VET ADM HOSP, MED SERV, BOSTON, MA 02130 USA