Sharma, S. P., and Anuj Singh. “I Gel Versus Endotracheal Intubation for Percutaneous Tracheostomies: A Randomised Study to Ascertain Amicable Approach”. International Surgery Journal 8, no. 9 (August 27, 2021): 2718–2724. Accessed September 23, 2025. https://www.ijsurgery.com/index.php/isj/article/view/7827.