1. Institute for Experimental Endocrinology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin and Berlin Institute of Health, D‑13353 Berlin, Germany
2. Department of Gastrointestinal Surgery, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
3. Medical Department for Hematology and Oncology, Klinikum rechts der Isar, Technische University Munich, D‑81675 Munich, Germany
4. Department of Rheumatology and Clinical Immunology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
5. Department of Gastroenterology, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, P.R. China