[1] Univ Hosp Bern, Inselspital, Dept Gen Internal Med, Div Psychosomat Med, CH-3010 Bern, Switzerland
[2] Univ Hosp Bern, Inselspital, Dept Cardiol, CH-3010 Bern, Switzerland
[3] Univ Zurich Hosp, Dept Psychiat & Psychotherapy, CH-8091 Zurich, Switzerland
[4] Univ Bern, Inst Social & Prevent Med, Bern, Switzerland
[5] Univ Bern, Div Clin Psychol & Psychotherapy, Inst Psychol, Bern, Switzerland
[6] Univ Bern, Inselspital, Dept Gen Internal Med, Div Psychosomat Med, CH-3010 Bern, Switzerland