Khongkaew, Tippimol, Thida Uakritdathikarn, and Orarat Karnjanawanichkul. 2013. “Intracuff Pressure of Four Brands of Endotracheal Tube Used in Intubated Patient Undergoing General Anesthesia”. Srinagarind Medical Journal 24 (1):23-29. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12992.