[1] CHILDRENS HOSP, DIV ENDOCRINOL & METAB, LOS ANGELES, CA 90027 USA
[2] UNIV SO CALIF, SCH MED, DEPT PEDIAT, LOS ANGELES, CA 90007 USA
[3] CHILDRENS HOSP, DEPT PATHOL, LOS ANGELES, CA 90027 USA
[4] UNIV SO CALIF, SCH MED, DEPT PATHOL, LOS ANGELES, CA 90007 USA