The economic cost of HIV/AIDS in Canada -- Changing the balance of power: the Listen UP! research project and participatory research with marginalized communities -- Gender, injection drug use and HIV risk in Ontario, Canada -- HIV/AIDS and Aboriginal women in Canada -- HIV counselling and testing among pregnant women in Canada: best practices -- Gender differences in results of a programme to promote the sexual health of high school students in Nova Scotia -- HIV prevention programmes and female prostitutes: the Canadian context.