Farzam, Hossein, Mitra Yari, Ghobad Mohammadi, and Maryam Rahmatinejad. “A Comparative Study of Tramadol and Lidocaine Gel on Complications of Orotracheal Intubation”. Anaesthesia, Pain & Intensive Care 24, no. 2 (June 24, 2020): 183-188. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/1260.