Devinder Kumar Vohra; Singh, N.; Manchanda JK; Sanjeev Davey; Arvind Trivedi; Anuradha Dave; Kayanat Nasser. A Comparative Study of Wave 1 and 2 Mortality Factors Among COVID-19 Patients in a Level 3 Medical College Hospital in Saharanpur India. Asian J Med Sci 2022, 13, 1-6.