Waitayawinyu, P., Siriwannasandha, B., & Namwong, A. (2020). Incidence and Risk Factors of Moderate to Severe Pain in 24 hours after Laparoscopic Cholecystectomy. Siriraj Medical Journal, 64(4), 119–122. retrieved from https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/244174