Kucuk, Nergiz, Ahmet Yasar, and Sebahattin Uslu. 2021. “The Effectiveness of Intranasal Fentanyl and Intravenous Ketorolac Tromethamine Combination for Postoperative Analgesia”. Annals of Medical Research 4 (3):0279-81. http://www.annalsmedres.org/index.php/aomr/article/view/2624.