[1] Aristotle Univ Thessaloniki, Sch Med, Dept Psychiat 3, Thessaloniki, Greece
[2] Univ British Columbia, Mood Disorders Ctr Excellence, Djavad Mowafaghian Ctr Brain Hlth, Dept Psychiat, Vancouver, BC, Canada
[3] Psychiat Schwabisch Hall & Paracelsus Med Univ, Nurnberg, Germany
[4] Univ Barcelona, Hosp Clin, Inst Neurosci, IDIBAPS,CIBERSAM, Barcelona, Catalonia, Spain
[5] Kings Coll London, Inst Psychiat Psychol & Neurosci, Ctr Affect Disorders, London, England
[6] Univ Ottawa, Royal Inst Mental Hlth Res, Dept Psychiat, Ottawa, ON, Canada
[7] Univ New Mexico, Hlth Sci Ctr, Dept Psychiat & Behav Sci, Albuquerque, NM 87131 USA
[8] Med Univ Vienna, Dept Psychiat & Psychotherapy, AKH, Vienna, Austria
[9] Med Univ Vienna, Ctr Brain Res, Vienna, Austria
[10] Ludwig Maximilians Univ Munchen, Psychiat Dept, Munich, Germany