[1] Heinrich Heine Univ Dusseldorf, Dept Child & Adolescent Psychiat, LVR Klinikum Dusseldorf, Berg Landstr 2, D-40629 Dusseldorf, Germany
[2] Carl von Ossietzky Univ Oldenburg, Dept Hlth Serv Res, Ammerlander Heerstr 140, D-26129 Oldenburg, Germany
[3] Philipps Univ Marburg, Dept Child & Adolescent Psychiat, Psychosomat & Psychotherapy, Hans Sachs Str 4, D-35039 Marburg, Germany
[4] Charite Univ Med Berlin, Dept Psychiat, Campus Benjamin Franklin,Hindenburgdamm 30, D-12203 Berlin, Germany
[5] Univ Med Ctr Gottingen, Dept Child & Adolescent Psychiat, Von Siebold Str 5, D-37075 Gottingen, Germany
[6] Tech Univ Dresden, Fac Med, Dept Child & Adolescent Psychiat, Fetscherstr 74, D-01307 Dresden, Germany