Schreiner, P., Yilmaz, B., Rossel, J., Franc, Y., Misselwitz, B., Scharl, M., Zeitz, J., Frei, P., Greuter, T., Vavricka, S. R., Pittet, V., Siebenhüner, A., Juillerat, P., von Känel, R., Macpherson, A. J., Rogler, G., Biedermann, L., & , (2019). vegetarian or gluten‐free diets in patients with inflammatory bowel disease are associated with lower psychological well‐being and a different gut microbiota, but no beneficial effects on the course of the disease. United European Gastroenterology journal, 7(6), 767–781. http://access.bl.uk/ark:/81055/vdc_100124390849.0x00000a