Chanwaro, Y. “The Study of the Efficiency of Chewing Gum on Stimulation of Bowel Function After Cesarean Delivery at Buddhasothorn Hospital”. Srinagarind Medical Journal, vol. 37, no. 6, Dec. 2022, pp. 596-01, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/256007.