Affiliation: | 1 St. Mary’s Hospital, Department of Internal Medicine, Gastroenterology, and Oncology, Frankfurt, Germany;2 Medical Department, Johannes Gutenberg University of Mainz, Mainz, Germany;3 Institute for Genetics, University of Cologne, Cologne, Germany;4 Institute of Pathology, Johannes Gutenberg University of Mainz, Mainz, Germany;5 Medical Department, University of Tübingen, Tübingen, Germany;6 Department of Medicine, Mount Sinai Hospital and University of Toronto, Toronto, Canada |