1. Division of Gastroenterology and Hepatology Department of Internal Medicine III Medical University of Vienna Vienna Austria
2. Department of Gastroenterology and Hepatology Musashino Red Cross Hospital Tokyo Japan
3. Institute of Cancer Research Internal Medicine I Medical University of Vienna and Comprehensive Cancer Center Vienna Austria
4. Institute of Pathophysiology and Allergy Research Center of Pathophysiology, Infectiology, and Immunology Medical University of Vienna Vienna Austria
5. Clinical Institute of Pathology Medical University of Vienna Vienna Austria
6. Internal Medicine and Gastroenterology, Central Admission, and First Aid Public Hospital Klagenfurt am Woerthersee Klagenfurt Austria
7. IMed19 Vienna Austria
8. Comparative Medicine Interuniversity Messerli Research Institute of the University of Veterinary Medicine ViennaMedical University of Vienna and University of Vienna Vienna Austria