Hausken, Trygve. “The Role of Chromogranin A in Irritable Bowel Syndrome”. Journal of Gastrointestinal and Liver Diseases 18, no. 2 (June 1, 2009): 251–259. Accessed July 13, 2026. https://www.jgld.ro/jgld/index.php/jgld/article/view/2009.2.2010.