[1] Ctr Paediat Endocrinol Zurich PEZZ, CH-8006 Zurich, Switzerland
[2] Radboud Univ Nijmegen, Dept Pediat, Med Ctr, NL-6525 GA Nijmegen, Netherlands
[3] Karolinska Univ Hosp, Dept Endocrinol, S-11152 Stockholm, Sweden
[4] Karolinska Inst, Dept Mol Med & Surg, S-17176 Stockholm, Sweden