1. Global epidemiology of hepatitis C infection;Shepard;Lancet Infect Dis,2005
2. Australian Department of Health and Ageing http://www.health.gov.au/internet/main/publishing.nsf/content/phd-hepc-estimates-project-06-l 2008
3. CDC http://wonder.cdc.gov/controller 2008
4. National Health and Nutrition Examination Surveys 1988-2006 http://www.cdc.gov/nchs/about/major/nhanes 2008
5. Prevalence of HCV infection in the United States;Armstrong;Ann Int Med,2006