Rerknimitr, Rungsun, Thawatchai Akaraviputh, Thawee Ratanachu-Ek, Pradermchai Kongkam, Nonthalee Pausawasdi, and Pises Pisespongsa. 2018. “Current Status of GI Endoscopy in Thailand and Thai Association of Gastrointestinal Endoscopy (TAGE)”. Siriraj Medical Journal 70 (5):476-78. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/152789.