[1] Univ Geneva, Childrens Hosp, Hematooncol Unit, Geneva, Switzerland
[2] Univ Hosp Geneva, Dept Pathol, Geneva, Switzerland
[3] SUNY Stony Brook, Dept Pediat Endocrinol, Stony Brook, NY 11794 USA
[4] Univ Geneva, Childrens Hosp, Endocrinol & Diabetol Dept, Geneva, Switzerland