1. Newcastle University; Institute of Health and Society; Richardson Road Newcastle upon Tyne UK NE2 4AX
2. The University of Sheffield; School of Health and Related Research; Regent Street Sheffield UK S1 4DA
3. South African Medical Research Council; Cochrane South Africa; PO Box 19070 Tygerberg Cape Town South Africa 7505
4. Lausanne University Hospital; Alcohol Treatment Center, Department of Community Medicine and Health; Lausanne Switzerland
5. Royal Brisbane and Women's Hospital; Department of Psychiatry; Centre for Drug & Alcohol Studies School of Medicine University of Queensland/Royal Brisbane Hospital Queensland Australia 4029
6. Lausanne University Hospital; Cochrane Switzerland, Institute of Social and Preventive Medicine; Biopôle 2 Route de la Corniche 10 Lausanne Vaud Switzerland CH-1010