Uyar Türkyılmaz, H.E., Göktuğ, A., Güleç, H., Akın Takmaz, S., Kotanoğlu, M.S. and Ceyhan, S. 2021. The effect of preemptive ketamine on postoperative analgesia in lower extremity surgery. Journal of Surgery and Medicine. 5, 11 (Nov. 2021), 1090–1094. DOI:https://doi.org/10.28982/josam.862547.