M. Aqil, M. M. Imran, U. Usman, S. Musharaf, Z. Ahmed, and A. Hamad, “Dextromethorphan Role on Cough Suppression and Patient Procedure Tolerance in Flexible Bronchoscopy”, Pak Armed Forces Med J, vol. 74, no. SUPPL-2, pp. S175-S178, Nov. 2024, doi: 10.51253/pafmj.v74iSUPPL-2.5315.