1. Estimation of HIV incidence in the United States;Hall;JAMA,2008
2. HIV/AIDS epi updates, November 2007,2007
3. Estimates of HIV prevalence and incidence in Canada, 2008,2009
4. HIV/AIDS Surveillance in Europe: end-year report 2006, no 75,2007
5. HIV/AIDS in Europe: epidemiological situation in 2006 and a new framework for surveillance;Herida;Euro Surveill,2007