[1] Univ Hosp, Pediat Heart Ctr, Giessen, Germany
[2] Univ Childrens Hosp, Pediat Cardiol, Zurich, Switzerland
[3] Univ Childrens Hosp, Childrens Res Ctr, Zurich, Switzerland
[4] Univ Childrens Hosp, Ctr MR Res, Zurich, Switzerland
[5] Univ Childrens Hosp, Child Dev Ctr, Zurich, Switzerland
[6] SPZ Frankfurt Mitte, Child Dev Ctr, Frankfurt, Germany
[7] Univ Hosp, Pediat Neurol, Giessen, Germany