Tayyib, Nahla A., Pushpamala Ramaiah, Fatmah J. Alsolami, and Mohammed S. Alshmemri. “Immunomodulatory Effects of Zinc As a Supportive Strategies for COVID-19”. Journal of Pharmaceutical Research International 32, no. 13 (August 1, 2020): 14-22. Accessed August 4, 2020. https://journaljpri.com/index.php/JPRI/article/view/30577.