Sarma, Rinki, Balbir Kumar, Rakesh Garg, and Brajesh Kumar. “COVID-19 Reinfection or Relapse: Case Series”. Asian Pacific Journal of Cancer Care 7, no. 2 (April 17, 2022): 401-403. Accessed October 12, 2024. http://waocp.com/journal/index.php/apjcc/article/view/844.