1. Division of Gastroenterology, Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei Province China
2. Huazhong University of Science and Technology Wuhan Hubei Province China
3. Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei Province China
4. Department of Internal Medicine II University Hospital Würzburg, Julius‐Maximilian University of Würzburg Würzburg Germany