Allen M. Quirit, Annaliz R. Caparras, and Issa Rufina S. Tang. “The Efficacy of Zinc Supplementation to Prevent Progression to Immunologic Failure Among HIV- Infected Adults A Meta-Analysis”. International Journal of Progressive Research in Science and Engineering, vol. 2, no. 6, June 2021, pp. 138-42, https://journal.ijprse.com/index.php/ijprse/article/view/312.