Sharif, Mahjabeen, Bushra Tayyaba Khan, Salman Bakhtiar, and Mubashir Sharif. “IPRATROPIUM ATTENUATES INSULIN INDUCED TRACHEAL SMOOTH MUSCLE CONTRACTION OF GUINEA PIG IN VITRO: Ipratropium”. Pakistan Armed Forces Medical Journal 64, no. 1 (March 31, 2014): 114–118. Accessed October 11, 2025. https://pafmj.org/PAFMJ/article/view/571.