Prajapati, Arpit Chelabhai, et al. “A Hospital Based Cross Sectional Study to Find Out Factors Associated With Disease Severity and Length of Hospital Stay in COVID-19 Patients in Tertiary Care Hospital of Ahmedabad City”. Indian Journal of Community Health, vol. 33, no. 2, June 2021, pp. 256-9, doi:10.47203/IJCH.2021.v33i02.006.