Kalani, N., Rayatdoost, E., Rahmanian, F., Hatami, N. and Foroughian, M. (2021) “Comparison of the Effect of Pethidine, Ketorolac and Ketorolac-Diazepam Combination in Reducing Pain in Patients with acute low back Pain; a Clinical Trial Study”, Iranian Journal of Emergency Medicine, 8(1), p. e18. doi: 10.22037/ijem.v8i1.34928.