Malik, Fatima Qasim, Bushra Tayyaba Khan, and Mahjabeen Sharif. “PROTECTIVE EFFECT OF LIGNOCAINE AGAINST ACETYLCHOLINE AND BRADYKININ INDUCED TRACHEAL TISSUE CONTRACTION”. Pakistan Armed Forces Medical Journal 69, no. 6 (December 19, 2019): 1222–26. Accessed September 19, 2025. https://www.pafmj.org/PAFMJ/article/view/3639.