1. Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
2. Faculty of Medicine, University of Latvia, Digestive Diseases Center GASTRO, and Riga East University Hospital, Riga, Latvia
3. Department of Gastroenterology, Lithuanian University of Health Sciences, Kaunas, Lithuania
4. Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa, Israel
5. Division of Preventive Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
6. German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany