[1] Med Univ Innsbruck, Dept Gynecol Endocrinol & Reprod Med, Innsbruck, Austria
[2] Univ Witten Herdecke Deutschland, Vest Kinder & Jugendklin Datteln, Witten, Germany
[3] Med Univ Innsbruck, Dept Pediat 1, Div Pediat Neurol, Innsbruck, Austria
[4] Med Univ Innsbruck, Dept Med Stat Informat & Hlth Econ, Innsbruck, Austria
[5] Hosp Ostallgau Kaufbeuren, Dept Pediat, Kaufbeuren, Germany