Varshney RK, Prasad MK, Garg M. Comparison of Nitroglycerin versus Lignocaine Spray to Attenuate Haemodynamic Changes in Elective Surgical Patients Undergoing Direct Laryngoscopy and Endotracheal Intubation: A prospective randomised study. Sultan Qaboos Univ Med J [Internet]. 2019Dec.22 [cited 2024May3];19(4):e316-323. Available from: https://journals.squ.edu.om/index.php/squmj/article/view/3386