| Affiliation: | 1. Department of Biological Safety, German Federal Institute for Risk Assessment, Berlin, Germany Brandenburg Medical School, Institute of Laboratory Medicine, Brandenburg Hospital, Brandenburg, Germany;2. Practice for Gastroenterology, Brandenburg, Germany;3. Practice for Gastroenterology, Bad Belzig, Germany;4. Practice for Gastroenterology, Berlin, Germany;5. Brandenburg Medical School, Institute of Laboratory Medicine, Brandenburg Hospital, Brandenburg, Germany;6. Faculty of Medicine, Institute of Medical Microbiology and Hygiene, Medical Center-University of Freiburg, Freiburg, Germany |
