[1] Altrecht Inst Mental Hlth Care, Utrecht, Netherlands
[2] NIMH, Mood & Anxiety Disorders Program, Bethesda, MD 20892 USA
[3] NIMH, Biol Psychiat Branch, Bethesda, MD 20892 USA
[4] Univ Texas, SW Med Ctr, Dallas, TX 75230 USA
[5] Univ Calif Los Angeles, Mood Disorders Res Program, Los Angeles, CA USA
[6] Univ Cincinnati, Psychopharmacol Res Program, Cincinnati, OH USA
[7] Univ Munich, Psychiat Klin, Munich, Germany
[8] Univ Freiburg, Psychiat Klin, Freiburg, Germany
[9] Univ Groningen, Dept Psychiat, Groningen, Netherlands