Malik, Fatima Qasim, et al. “DETERMINATION OF RELAXANT EFFECT OF ROPIVACAINE AGAINST ACETYLCHOLINE AND BRADYKININ INDUCED AIRWAY CONTRACTION OF GUINEA PIGS”. Pakistan Armed Forces Medical Journal, vol. 70, no. 4, Aug. 2020, pp. 1007-12, https://pafmj.org/PAFMJ/article/view/5073.