1. School of Social and Community Medicine; Canynge Hall 39 Whatley Road Bristol UK BS8 2PS
2. Academic Medical Center, J1B-207-1; Department of Clinical Epidemiology and Biostatistics; P.O. Box 22700 AMSTERDAM Netherlands 1100 DE
3. Monash University; School of Public Health & Preventive Medicine; The Alfred Centre 99 Commercial Road Melbourne Victoria Australia 3004
4. UK Cochrane Centre; National Institute for Health Research Summertown Pavilion, Middle Way Oxford Oxfordshire UK OX2 7LG
5. The Children's Hospital at Westmead; Cochrane Renal Group, Centre for Kidney Research; Locked Bag 4001 Westmead NSW Australia 2145
6. Kleijnen Systematic Reviews; Unit 6, Escrick Business Park Riccall Road Escrick UK YO196FD
7. York Health Economics Consortium; Market Square University of York, Heslington York UK YO10 5NH