“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, vol. 15, no. 7, July 2024, pp. 20-26, https://doi.org/10.3126/ajms.v15i7.63102.