Comparison between ultrasonography and capnography for ascertaining placement of endotracheal tube in patients undergoing general anesthesia – A prospective observational study. Asian Journal of Medical Sciences, [S. l.], v. 15, n. 7, p. 20–26, 2024. DOI: 10.3126/ajms.v15i7.63102. Disponível em: https://nepjol.info/index.php/AJMS/article/view/63102. Acesso em: 12 jul. 2026.