[1] Univ Childrens Hosp, DE-72076 Tubingen, Germany
[2] Univ Cologne, Childrens Hosp, Cologne, Germany
[3] Univ Giessen, Giessen, Germany
[4] Leiden Univ, Med Ctr, Dept Pediat, Leiden, Netherlands
[5] Emma Childrens Hosp, Acad Med Ctr Amsterdam, Dept Radiol, Amsterdam, Netherlands
[6] Meyer Childrens Hosp, Rambam Med Ctr, Haifa, Israel
[7] Royal Childrens Hosp, Dept Endocrinol, Parkville, Vic 3052, Australia
[8] Univ Loughborough, Ctr Global Hlth & Human Dev, Loughborough, Leics, England
[9] UCL, Inst Child Hlth, London, England
[10] Univ Coll London Hosp, London, England
[11] Odense Univ Hosp, HC Andersen Childrens Hosp, DK-5000 Odense, Denmark
[12] Visiana, Holte, Denmark