Pulsawat, P., and S. Junhavitthaya. “Parental Anxiety Before Elective Surgery in Pediatric Patients at King Chulalongkorn Memorial Hospital”. Thai Journal of Anesthesiology, vol. 51, no. 3, May 2025, pp. 149-56, https://he02.tci-thaijo.org/index.php/anesthai/article/view/275221.