1. Faculty of medicine and life sciences Hasselt University Hasselt Belgium
2. Department of gastroenterology Ziekenhuis Oost‐Limburg Genk Belgium
3. Medical Microbiology School of NUTRIM Maastricht University Medical Centre Maastricht the Netherlands
4. Centre for Alcohol and other Drugs (CAD) Limburg Hasselt Belgium
5. Department of gastroenterology and hepatology University Hospitals KULeuven Leuven Belgium