Varshney, Krati, and Sanjeev Dimri. “Detection of Covid-19: Antigen Test Versus RT-PCR”. International Journal of Health and Clinical Research 4, no. 8 (April 29, 2021): 236–237. Accessed December 3, 2024. https://ijhcr.com/index.php/ijhcr/article/view/1458.