Niruthisar, Supranee, Pin Sriprajitticha, Sukunya Sathonpanic, Rojanee Kukiatkulchai, and Anuntana Tunprayoo. “A survey of postoperative pain experience at King Chulalongkorn Memorial Hospital: Patients’ perspective”. Chulalongkorn Medical Journal 52, no. 6 (October 26, 2023). accessed April 27, 2025. https://he05.tci-thaijo.org/index.php/CMJ/article/view/1116.