1. UNAIDS. Global HIV statistics, fact sheet. Geneva: UNAIDS; 2017.
2. UNAIDS. Get on the fast-track. The life-cycle approach to HIV. Finding solutions for everyone at every stage of life. Geneva: UNAIDS; 2016.
3. Mahy M, Autenrieth CS, Stanecki K, Wynd S. Increasing trends in HIV prevalence among people aged 50 years and older: evidence from estimates and survey data. AIDS. 2014;28(4):S453.
4. UNAIDS. HIV and aging: a special supplement to the UNAIDS report on the global AIDS epidemic 2013. Geneva: UNAIDS; 2013. p. 2013.
5. WHO. Proposed working definition of an older person in Africa for the MDS project: definition of an older or elderly person. 2002.
http://www.who.int/healthinfo/survey/ageingdefnolder/en/
.