1. LANL, 2017. Los Alamos HIV database. Last accessed: May 1, 2017. Available from: http://www.hiv.lanl.gov.
2. LANL, 2017. HIV Circulating Recombinant Forms (CRFs). Last accessed: May 1, 2017. Available from: http://www.hiv.lanl.gov/content/sequence/HIV/CRFs/CRFs.html.
3. Global trends in molecular epidemiology of HIV-1 during 2000–2007;J Hemelaar;AIDS,2011
4. Molecular epidemiology of HIV-1 infection in Europe: An overview;A Beloukas;Infect Genet Evol,2016
5. The increasing genetic diversity of HIV-1 in the UK, 2002–2010;D Dolling;AIDS,2014