Maddimani, R. S., R. Krishnegowda, K. Yadav, A. Janaki, and S. Subramanya. “Clinical Features and Outcomes of COVID-19 Patients Previously Vaccinated With COVID Vaccine”. International Journal of Advances in Medicine, vol. 10, no. 8, July 2023, pp. 616-21, doi:10.18203/2349-3933.ijam20232209.