[1] Boston Childrens Hosp, Div Endocrinol, 300 Longwood Ave, Boston, MA 02115 USA
[2] Univ Calif Davis, Sch Med, Dept Pediat, Endocrinol Sect, Sacramento, CA 95817 USA
[3] Boston Childrens Hosp, Div Crit Care Med, Boston, MA USA
[4] Med Univ Vienna, Dept Pediat & Adolescent Med, Vienna, Austria
[5] Gothenburg Univ, Uddevalla & Sahlgrenska Acad, NU Hosp Grp, Dept Pediat, Gothenburg, Sweden
[6] Univ Colorado, Sch Med, Dept Pediat, Aurora, CO USA
[7] Icahn Sch Med Mt Sinai, Dept Pediat, Div Endocrinol Diabet & Metab, New York, NY 10029 USA
[8] Univ Chile, Sch Med, Inst Maternal & Child Res, Santiago, Chile