Kerdsaeng, P. “The Effect of a Preparatory Instructional Video on Procedure Time and Confidence in Pediatric Patients Undergoing Spirometry”. Royal Thai Air Force Medical Gazette, vol. 72, no. 2, Aug. 2026, pp. 90-102, https://he02.tci-thaijo.org/index.php/rtafmg/article/view/278397.