katseesung, P., U. Asdornwised, W. Pinyopasakul, and T. Akaraviputh. “Effects of Continuing Care Program on Quality of Bowel Preparation and Anxiety in Who Receiving Ambulatory Colonoscopy”. Nursing Science Journal of Thailand, vol. 33, no. 3, Sept. 2015, pp. 61-73, https://he02.tci-thaijo.org/index.php/ns/article/view/53199.