1. Klinikum rechts der Isar, Technische Universität München; Department for Vascular and Endovascular Surgery; Ismaninger Strasse 22 Munich Bavaria Germany 81675
2. University of Munich; Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine; Ziemssenstrasse 1 Munich Germany 80336
3. University of Innsbruck; Institute of Psychology, Department for Applied Psychology; Maximilianstrasse 2 Innsbruck Austria A-6020
4. Ludwig-Maximilians-University Munich; Institute for Medical Informatics, Biometry and Epidemiology, Pettenkofer School of Public Health; Marchioninistr. 15 Munich Bavaria Germany 81377
5. University of Lausanne; Center for Primary Care and Public Health (Unisanté); Route de la Corniche 10 Lausanne Switzerland CH-1010