Patel, Prakash, and Kalpesh Chodvadiya. “A Study on Correlation of COVID-19 Vaccination and Hospitalization Among Adults Aged 45 Years and Above: A Hospital Based Case Control Study”. National Journal of Community Medicine 12, no. 07 (July 31, 2021): 211–214. Accessed May 7, 2024. https://njcmindia.com/index.php/file/article/view/368.