Dashti Khavidaki, G., Keykha, A., Beirami, F., Khoshfetrat, M. and Shirazian, F. (2018) “The effect of using pre-operative ketamine injection on post-tonsillectomy pain intensity in children”, Biomedical Research and Therapy, 5(02), pp. 2013-2021. doi: 10.15419/bmrat.v5i02.416.