Charu Mishra, Arvind Kumar, Yogesh Kumar Yadav, and Vijay Kumar. 2021. “Causatum in Adults up till 6 Months After COVID-19 Infection: A Longitudinal Study”. International Journal of Health and Clinical Research 4 (15):352-57. https://ijhcr.com/index.php/ijhcr/article/view/2529.