1. Brown A.E. Hughes G. Nardone A. Gill O.N. Delpech V.C. et al HIV in the United Kingdom 2014 report: data to end December 2013 [WWW document] https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/377194/2014_PHE_HIV_annual_report_19_11_2014.pdf
2. At a glance - HIV and AIDS in Canada: surveillance report to December 31, 2012 [WWW document] http://www.phac-aspc.gc.ca/aids-sida/publication/survreport/2012/dec/index-eng.php
3. Challenges and successes in linking HIV-infected women to care in the United States;Aziz;Clinical Infectious Diseases,2011
4. Trends in HIV/AIDS diagnoses-33 states, 2001-2004;Espinoza;Morbidity and Mortality Weekly Report,2005