[1] Vrije Univ Amsterdam, Dept Biol Psychol, NL-1081 BT Amsterdam, Netherlands
[2] NIA, NIH, Baltimore, MD 21224 USA
[3] Univ Minnesota, Dept Psychol, Minneapolis, MN 55455 USA
[4] Univ Groningen, Univ Med Ctr Groningen, Dept Psychiat, NL-9713 AV Groningen, Netherlands
[5] Leiden Univ, Dept Clin Psychol, Leiden, Netherlands
[6] Leiden Univ, Dept Psychiat, Leiden, Netherlands
[7] VU Univ Med Ctr Amsterdam, EMGO Inst, Dept Psychiat, Amsterdam, Netherlands
[8] Univ Tartu, Inst Mol & Cell Biol, EE-50090 Tartu, Estonia
[9] Estonian Bioctr, Tartu, Estonia
[10] Univ Tartu, Estonian Genome Project, EE-50090 Tartu, Estonia
[11] Washington Univ, Sch Med, Dept Psychiat, St Louis, MO 63110 USA
[12] Erasmus Univ, Med Ctr, Dept Epidemiol, Rotterdam, Netherlands
[13] CNR, Ist Neurogenet & Neurofarmacol, Cagliari, Italy
[14] Univ N Carolina, Dept Genet, Chapel Hill, NC USA
[15] Univ Tartu, Dept Psychol, EE-50090 Tartu, Estonia
[16] A Buzzati Traverso CNR, Inst Genet & Biophys, Naples, Italy
[17] Univ Munich LMU, Dept Psychiat, Munich, Germany
[18] Univ Helsinki, FIMM, Helsinki, Finland
[19] Natl Inst Hlth & Welf, Helsinki, Finland
[20] Univ Helsinki, Dept Gen Practice & Primary Hlth Care, Helsinki, Finland
[21] Vasa Cent Hosp, Vaasa, Finland
[22] Univ Helsinki, Cent Hosp, Unit Gen Practice, Helsinki, Finland
[23] Folkhalsan Res Ctr, Helsinki, Finland
[24] Wellcome Trust Sanger Inst, Cambridge, England
[25] Broad Inst Harvard & MIT, Cambridge, MA USA
[26] Univ Helsinki, Dept Med Genet, Helsinki, Finland
[27] Helsinki Univ Hosp, Helsinki, Finland
[28] Univ Edinburgh, Dept Psychol, Ctr Cognit Ageing & Cognit Epidemiol, Edinburgh, Midlothian, Scotland
[29] Western Gen Hosp, Inst Genet & Mol Med, MRC Human Genet Unit, Edinburgh EH4 2XU, Midlothian, Scotland
[30] Queensland Inst Med Res, Brisbane, Qld 4006, Australia
[31] Erasmus Univ, Dept Clin Genet, Med Ctr, NL-3000 DR Rotterdam, Netherlands
[32] Univ Michigan, Dept Biostat, Ctr Stat Genet, Ann Arbor, MI 48109 USA
[33] Univ Helsinki, Dept Psychol, SF-00100 Helsinki, Finland