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Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Wuhan University - Department of Gastroenterology, Wuhan University - Renmin Hospital, Wuhan University - Department of Pathology, Wuhan University - Department of Gastroenterology, Huazhong University of Science and Technology - Tongji Medical College, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - NHC Key Laboratory of Pulmonary Diseases, Huazhong University of Science and Technology - NHC Key Laboratory of Pulmonary Diseases, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine, Huazhong University of Science and Technology - School of Public Health, Huazhong University of Science and Technology - Department of Respiratory and Critical Care Medicine and Wuhan University - Department of Gastroenterology