Tortum, F., A. Gur, A. Calbay, O. Turalioglu, and E. Tekin. “A New Vital Sign in Determining the Triage Category in Emergency Department Presentations: End-Tidal Carbon Dioxide”. European Journal of Therapeutics, vol. 29, no. 4, Sept. 2023, pp. 689-97, doi:10.58600/eurjther1819.