Saeyup, P. (2020). Pediatric Endotracheal Tube Size Prediction: A Comparison among Ultrasound Measured Subglottic Diameter, Age-Formula and Little Fingernail Width Methods. Thai Journal of Anesthesiology, 46(4), 220–226. retrieved from https://he02.tci-thaijo.org/index.php/anesthai/article/view/244895