Murad Khudadad Boujan A, fazeel Kareem N, A. Marouf A, Abdullah Ahmed Fahmi S, Qadir Mahmood S. Lidocaine Versus Ketamine Pretreatment on Propofol Injection Pain. KJAR. 2019;4(3):234-242. doi:10.24017/science.2019.ICHMS.25