[1] Psychiat Univ Hosp Zurich, Dept Psychiat Psychotherapy & Psychosomat, CH-8021 Zurich, Switzerland
[2] Univ Ulm, Dept Psychiat 2, D-89069 Ulm, Germany
[3] IIT, Chicago, IL 60616 USA
[4] Univ Manchester, Sch Psychol Sci, Manchester, Lancs, England
[5] Joint Res Inst Univ Zurich & Swiss Fed Inst Techn, Coll Helveticum, Zurich, Switzerland