[1] Charite Univ Med Berlin, Ctr Affect Neurosci CAN, Dept Psychiat, Campus Benjamin Franklin, Berlin, Germany
[2] Free Univ Berlin, Berlin, Germany
[3] Humboldt Univ, Berlin, Germany
[4] MSB Med Sch Berlin, Dept Psychol, Berlin, Germany
[5] Univ Zurich, Psychiat Hosp, Dept Psychiat Psychotherapy & Psychosomat, Zurich, Switzerland
[6] Charite Univ Med Berlin, Ctr Affect Neurosci CAN, Dept Psychiat, Psychol,Campus Benjamin Franklin, Hindenburgdamm 30, D-12203 Berlin, Germany