Luangjaru, S., C. Suttinont, S. Chinprasatsak, and S. Thaisamakr. “Sigmoidoscopy/Colonoscopy in Department of Medicine, Maharat Nakhon Ratchasima Hospital: One Year Experience”. Maharat Nakhon Ratchasima Hospital Journal, vol. 25, no. 3, Oct. 2024, pp. 133-40, https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/2203.