Aqil, Mehvish, et al. “Dextromethorphan Role on Cough Suppression and Patient Procedure Tolerance in Flexible Bronchoscopy”. Pakistan Armed Forces Medical Journal, vol. 74, no. SUPPL-2, Nov. 2024, pp. S175-S178, https://doi.org/10.51253/pafmj.v74iSUPPL-2.5315.