ÇAKMAK, F.; TEKIN, E. Correlation of the end-tidal CO2 value with arterial blood gas parameters – evaluation of the treatment efficacy of COPD exacerbation in the emergency department. European Journal of Clinical and Experimental Medicine, [S. l.], v. 20, n. 3, p. 316–322, 2022. DOI: 10.15584/ejcem.2022.3.9. Disponível em: https://journals.ur.edu.pl/ejcem/article/view/11966. Acesso em: 28 dec. 2025.