1. UNAIDS (2021) Global HIV & AIDS Statistics—Fact Sheet|UNAIDS, UNAIDS 2021 Epidemiological Estimates. https://www.unaids.org/en/resources/fact-sheet
2. Kumar, N., Kansal, S., Sundar, S., Rai, M. and Jaya, C. (2021) Factors Affecting Default among Pre-ART Patients in Eastern Uttar Pradesh.
3. Avert (2020) HIV and AIDS in Zambia. AVERT, HIV and AIDS in Zambia. https://www.avert.org/professionals/hiv-around-world/sub-saharan-africa/zambia
4. Gray, J. and Grove, S. (2020) The Practice of Nursing Research. 9th Edition, Elsevier, Amsterdam.
5. Stephen, I. and Afolabi, A. (2021) Defaulting from Care and Quality of Life of Adults on Anti-Retroviral Treatment Program in Owo, Ondo State, Nigeria: A Case-Control Study. Journal of Health Sciences & Surveillance System, 9, 226-234.