Kucuk, Nergiz, Ahmet Yasar, and Sebahattin Uslu. “The Effectiveness of Intranasal Fentanyl and Intravenous Ketorolac Tromethamine Combination for Postoperative Analgesia”. Annals of Medical Research 4, no. 3 (May 25, 2021): 0279–0281. Accessed April 19, 2024. https://www.annalsmedres.org/index.php/aomr/article/view/2624.