M. Hanif, K. K. Sumalani, Z. Shaikh, V. Mandhan, and S. Haider, “Demographic features and outcomes in critically ill mechanically ventilated COVID-19 patients with respiratory failure in a resource limited ICU setting – Report from a tertiary care center in Karachi: Critically ill COVID-19 patients in a resource limited ICU setting”, J Fatima Jinnah Med Univ, vol. 16, no. 2, pp. 63–68, Feb. 2023.