Singh, T., H. Sarwar, A. Hurtado, and E. Islam. “Percutaneous Tracheostomy in Patients With COVID-19 Infection and Acute Respiratory Failure”. The Southwest Respiratory and Critical Care Chronicles, Vol. 11, no. 48, July 2023, pp. 9-13, doi:10.12746/swrccc.v11i48.1205.