[1] Karolinska Inst, Dept Clin Neurosci, Nobels Vag 9, S-17177 Stockholm, Sweden
[2] Univ Groningen, Groningen, Netherlands
[3] Philipps Univ, Marburg, Germany
[4] TU Dortmund, Dortmund, Germany
[5] Katholieke Univ Leuven, Leuven, Belgium
[6] Univ Malaga, Malaga, Spain
[7] Univ Nottingham, Nottingham, England
[8] Univ Groningen, Univ Med Ctr Groningen, Groningen, Netherlands
[9] Accare Child Study Ctr, Groningen, Netherlands
[10] Univ Padua, Amsterdam Publ Hlth Res Inst, Amsterdam, Italy
[11] Uppsala Univ, Uppsala, Sweden