Makinde, O., K. Rotimi, V. Ikumawoyi, T. Adeyemo, and S. Olayemi. “Effect of Vitamin A and Vitamin C Supplementation on Oxidative Stress in HIV and HIV-TB Co-Infection at Lagos University Teaching Hospital (LUTH) Nigeria”. African Health Sciences, vol. 17, no. 2, July 2017, pp. 308-14, doi:10.4314/ahs.v17i2.3.