Hossain, Mir Mahmud, Moniul Hossain, AKM Akhtaruzzaman, and Kazi Mesbahuddin Iqbal. 2014. “Assessment of Tracheal Intubation Grading”. Journal of the Bangladesh Society of Anaesthesiologists 17 (1):3-6. https://doi.org/10.3329/jbsa.v17i1.4043.