Luangjaru, Somchai. “Prevalence of Chromogranin A in Chronic Dyspepsia, IBS andChronic Diarrhea at Maharat Nakhon Ratchasima Hospital”. Maharat Nakhon Ratchasima Hospital Journal 35, no. 3 (September 10, 2024): 163–168. accessed June 10, 2025. https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/1759.