S. Surendhar, S. Jagadeesan, and A. B. Jagtap, “Complementary value of the Shock Index v. the Modified Shock Index in the prediction of in-hospital intensive care unit admission and mortality: A single-centre experience”, Afr J Thoracic Crit Care Med, vol. 29, no. 2, pp. 52–56, Aug. 2023, doi: 10.7196/AJTCCM.2023.v29i2.286.