Sheikhzadeh, D. et al. 2022. Determine the Appropriate Size of the Endotracheal Tube by Method Air Leak Test in Infants Weighing Less Than 2500 Grams and Compare It with Common Standards: Appropriate Size of endotracheal tube in neonates. Iranian Journal of Pediatric Surgery. 8, 1 (May 2022), 49–58. DOI:https://doi.org/10.22037/irjps.v8i1.37568.