A Randomized Study Comparing the Sniffing Position with Simple Head Extension for Glottis Visualization and Difficulty in Intubation during Direct Laryngoscopy. - Akhtar, Mehmooda; Ali, Zulfiqar; Hassan, Nelofar; Mehdi, Saqib; Wani, Gh Mohammad; Mir, Aabid Hussain (Anesthesia: Essays & Researches, 2017)