1. Keele University; Department of Primary Care & Health Sciences; Keele Staffordshire UK ST5 5BG
2. CEBAM; Belgian Branch of the Dutch Cochrane Centre; Kapucijnenvoer 33 blok J bus 7001 Leuven Vlaams-Brabant Belgium 3000
3. Norwegian University of Science and Technology; Unit for Applied Clinical Research, Faculty of Medicine; Trondheim Norway
4. Institute for Work & Health; 481 University Avenue Suite 800 Toronto ON Canada M5G 2E9
5. Erasmus Medical Center; Department of General Practice; PO Box 2040 Rotterdam Netherlands 3000 CA
6. Auckland University of Technology; School of Rehabilitation and Occupational Studies, Health and Rehabilitation Research Centre; Private Bag 92001 Auckland New Zealand 1142
7. NIVEL; International and Migrant Health; PO Box 1568 Utrecht Netherlands NL - 3500 BN
8. Oregon Health and Science University; Evidence-Based Family Medicine; OHSU School of Medicine, Family Medicine, Mail code FM 3181 SW Sam Jackson Park Road Portland OR USA 97239-30987
9. VU University Medical Center; Executive Board; PO Box 7057 Room 2d-18 Amsterdam Netherlands 1007 MB
10. VU University Medical Center; Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research; PO Box 7057 Amsterdam Netherlands 1007 MB