Pathanasethpong, A., and T. Ruenhunsa. “Incidence of Tube Changing When Using Motomoya Formula for Calculation of Cuffed Endotracheal Tube Size in Pediatric Patients”. Srinagarind Medical Journal, vol. 33, no. 3, May 2018, pp. 206-10, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/122208.