1. World Health Organization (2011) HIV in the WHO African Region: Progress towards achieving universal access to priority health sector interventions, 2011 update.
2. World Health Organization (2013) Consolidated Guidelines on the use of Antiretroviral Drugs for Treating and Preventing HIV infection: Recommendations for a Public Health Approach.
3. Guidelines for performing single-platform absolute CD4+ T-cell determinations with CD45 gating for persons infected with human immunodeficiency virus. Centers for Disease Control and Prevention;FF Mandy;MMWR Recomm Rep,2003
4. World Health Organization (2010) Antiretroviral therapy for HIV infection in adults and adolescents. Recommendations for a public health approach: 2010 revision.
5. World Health Organization (2010) Technical brief on CD4 technologies (Mai 2010).