1. Friedman DJ, Starfield B. Models of population health: their value for US public health practice, policy, and research. American Journal of Public Health. 2003; 93(3): 366-369.
2. Public Health Agency of Canada [homepage on the Internet]. Ottawa: Public Health Agency of Canada; [updated 2003 June 16; cited 2006 June 12]. Available from: http://www.phac-aspc.gc.ca/ph-sp/phdd/determinants/index.html
3. Isaacs SL, Schroeder SA. Class – the ignored determinant of the nation’s health. New England Journal of Medicine. 2004; 351(11): 1137-1142.
4. van Doorslaer E, Masseria C, Koolman X for the OECD Health Equity Research Group. Inequalities in access to medical care by income in developed countries. Canadian Medical Association Journal. 2006; 174(2): 177-183.