1. Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, Mainz, Germany
2. Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), Johannes Gutenberg University Medical Center, Mainz, Germany
3. Institute for Translational Immunology and Research Center for Immunotherapy (FZI), Johannes Gutenberg University Medical Center, Mainz, Germany
4. Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA