Kumar, Awanish, Sunil Kumar, and Dharmendra Pandey. “Repurposing of Polio Vaccine in Prevention of COVID-19: Thinking towards More Options”. Asia Pacific Journal of Health Management 17, no. 1 (April 7, 2022). Accessed January 30, 2023. https://journal.achsm.org.au/index.php/achsm/article/view/1461.