Dhiman, Shweta, Anju Romina Bhalotra, Ruchi Kumari, Kavita Rani Sharma, and Uttam Chand Verma. 2019. “Magnesium Sulfate and Fentanyl for Facilitating Awake Fiberoptic Nasotracheal Intubation: A Randomized Study”. Annals of Anesthesiology and Critical Care 4 (1), 1-6 (e90482). https://journals.sbmu.ac.ir/index.php/anescc/article/view/33287.