1. University of Ottawa; School of Psychology, Faculty of Social Sciences; Room 407C, Montpetit Hall 125 University Ottawa ON Canada K1N 6N5
2. University of West Indies; Epidemiology Research Unit; Mona Kingston 7 Jamaica
3. Menzies School of Health Research, Charles Darwin University; Nutrition Research Team; PO Box 41096 Darwin NT Australia 0811
4. University of Ottawa; Centre for Global Health, Institute of Population Health; 1 Stewart Street Ottawa ON Canada K1N 6N5
5. University of Ottawa; Bruyère Research Institute; 85 Primrose Street Ottawa ON Canada K1N 5C8
6. University of Montreal; WHO Collaborating Centre on Nutrition Changes and Development (TRANSNUT), Nutrition Department, Faculty of Medicine; Pavillon Liliane de Stewart 2405, Chemin de la Côte-Sainte-Catherine l Montréal Quebec Canada H3C 3J7
7. Barts and the London School of Medicine and Dentistry; Centre for Primary Care and Public Health; 58 Turner St Whitechapel London UK E1 2AB
8. Cochrane Musculoskeletal Group; Ottawa Hospital Research Institute 501 Smyth Road Ottawa ON Canada K1H 8L6
9. Norwegian Knowledge Centre for the Health Services; PO Box 7004 St Olavs plass Oslo Norway N-0130
10. University of Ottawa; Department of Epidemiology and Community Medicine; 501 Smyth Road Ottawa ON Canada K1H 8L6
11. The Hospital for Sick Children; Department of Psychology & Division of Haematology/Oncology; 555 University Avenue Toronto ON Canada M5G 1X8
12. London School of Hygiene and Tropical Medicine; Department of Social & Environmental Health Research, Faculty of Public Health & Policy; 15-17 Tavistock Place London UK WC1H 9SH