Qureshi, Kamil Hussain, Naveed Masood, Usman Ejaz Malik, and Syed Fazal-e-Karim Faisal Kundi. 2018. “FREQUENCY OF DIFFICULT INTUBATION IN OBESE PATIENTS WITH NECK CIRCUMFERENCE TO THYROMENTAL DISTANCE RATIO ≥ 5.0: Difficult Intubation in Obese Patients”. Pakistan Armed Forces Medical Journal 68 (5): 1288-92. https://pafmj.org/PAFMJ/article/view/2309.