[1] Univ Child Hosp, Heidelberg, Germany
[2] LMU, Dr Hauner Child Hosp, Munich, Germany
[3] Univ Child Hosp, Dusseldorf, Germany
[4] Univ Med Ctr, Hamburg, Germany
[5] Charite Univ Med Ctr, Berlin, Germany
[6] Hannover Med Sch, D-3000 Hannover, Germany
[7] Univ Child Hosp, Munster, Germany
[8] TU, Univ Child Hosp, Munich, Germany
[9] Evang Krankenhaus, Bethel, Bielefeld, Germany
[10] Inst Human Genet, Heidelberg, Germany