M. H. O. . Roshid, M. S. . Islam, R. K. . Nath, P. K. . Datta, S. A. . Begum, and G. A. . Chowdhury, “A Comparative Study between Intravenous Tramadol Versus Lidocaine Pretreatment in Reducing Pain on Propofol Injection”, J Chittagong Med Coll Teachers Ass, vol. 32, no. 2, pp. 90–94, Dec. 2021.