[1] Univ Gottingen, Dept Child & Adolescent Psychiat Psychotherapy, D-37075 Gottingen, Germany
[2] Univ Dundee, Dept Psychiat, Dundee DD1 4HN, Scotland
[3] Great Ormond St Hosp Sick Children, Dept Med Psychol, London WC1N 3JH, England
[4] Maudsley Hosp & Inst Psychiat, Inst Psychiat, London SE5 8AZ, England
[5] Univ Cagliari, Dept Neurosci, I-09124 Cagliari, Italy
[6] Kings Coll London, Inst Psychiat, MRC, Social Genet & Dev Res Ctr, London WC2R 2LS, England
[7] Radboud Univ Nijmegen Med Ctr, Acad Ctr Child & Adolescent Psychiat, Dept Psychiat, Nijmegen, Netherlands
[8] Univ Hosp Gasthuisberg, Dept Child & Adolescent Psychiat, Louvain, Belgium
[9] Univ Cologne, D-5000 Cologne 41, Germany
[10] SUNY Upstate Med Univ, Med Genet Res Program, Syracuse, NY USA
[11] SUNY Upstate Med Univ, Dept Psychiat & Behav Sci, Syracuse, NY USA
[12] Vrije Univ Amsterdam, Fac Psychol & Educ, Dept Clin Neuropsychol, NL-1081 HV Amsterdam, Netherlands
[13] Univ Zurich, Dept Child & Adolescent Psychiat, CH-8006 Zurich, Switzerland
[14] Univ Southampton, Dept Psychol, Southampton SO9 5NH, Hants, England
[15] Kings Coll London, Inst Psychiat, Dept Chils & Adolescent Psychiat, London WC2R 2LS, England