1. Department of Pulmonary and Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
2. Department of Pediatrics, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
3. Department of 1Pulmonary and Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
4. Department of Pathology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China
5. Department of Gastroenterology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China