Mungsa, Amornrat, Banjong Kheonkaew, Varaporn Silavised, and Keayoon Promon. 2013. “Anxiety in Patients Prior to Barium Enema Procedure in Srinagarind Hospital, Faculty of Medicine, Khon Kaen University”. Srinagarind Medical Journal 26 (1):55-63. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/12748.