1. AOK Baden-Württemberg; Department of Health Promotion/Occupational Health Management; Presselstr. 19 Stuttgart Baden-Württemberg Germany 70191
2. University Hospital, University of Heidelberg; Department of General Practice and Health Services Research; Vossstrasse 2 Heidelberg Bremen Germany D-69115
3. University of Bremen; Institute for Public Health and Nursing Research, Health Sciences Bremen; Bibliothekstr. 1 Bremen Bremen Germany 28359
4. University of Glasgow; MRC/CSO Social and Public Health Sciences Unit; Glasgow UK
5. University of Otago; Public Health; 23A Mein Street, Newtown Wellington New Zealand 6242
6. Danube University Krems; Cochrane Austria; Dr.-Karl-Dorrek-Strasse 30 Krems Austria 3500
7. Danube University Krems; Department for Evidence-based Medicine and Clinical Epidemiology; Dr.-Karl-Dorrek Str. 30 Krems Austria 3500
8. Leibniz Institute for Prevention Research and Epidemiology; Research Group for Evidence-Based Public Health; Achterstr. 30 Bremen Germany 28359