1. AOK Baden-Württemberg; Department of Health Promotion; 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. Leibniz Institute for Prevention Research and Epidemiology; Research Group for Evidence-Based Public Health; Achterstr. 30 Bremen Germany 28359
5. University of Glasgow; MRC/CSO Social and Public Health Sciences Unit; Glasgow UK
6. University of Otago; Public Health; 23A Mein Street, Newtown Wellington New Zealand 6242
7. University of Edinburgh; Usher Institute of Population Health Sciences and Informatics; Medical School Teviot Place Edinburgh UK EH8 9AG
8. Danube University Krems; Cochrane Austria, Department for Evidence-based Medicine and Evaluation; Dr.-Karl-Dorrek Str. 30 Krems Austria 3500
9. University of Bremen; Department for Health Services Research, Institute for Public Health and Nursing Research, Health Sciences Bremen; Bibliotheksstr. 1 Bremen Germany 28359