1. Joint United Nations Programme on HIV/AIDS. Global AIDS Response Progress Reporting (GARPR) 2016. 2016.
2. Joint United Nations Programme on HIV/AIDS. AIDS by the numbers. 2016.
3. World Health Organisation. Consolidated guidelines on the use of antiretroviral drugs for treating and preventing HIV infection: recommendations for a public health approach. Geneva: World Health Organisation; 2013.
4. WHO. Progress report 2011: global HIV/AIDS response. Epidemic uptake and health sector progress towards universal access. 2011.
5. Bucciardini R, Fragola V, Abegaz T, Lucattini S, Halifom A, Tadesse E, Berhe M, Pugliese K, Binelli A, De Castro P. Retention in Care of Adult HIV Patients Initiating Antiretroviral Therapy in Tigray, Ethiopia: A Prospective Observational Cohort Study. PLoS ONE. 2015;10(9), e0136117.