Stevenson, C., Blaauw, R., Fredericks, E., Visser, J., & Roux, S. (2013). Food avoidance in irritable bowel syndrome leads to a nutrition-deficient diet. South African Journal of Clinical Nutrition, 27(1), 25-30. Retrieved from http://sajcn.co.za/index.php/SAJCN/article/view/736