1. Department of Otorhinolaryngology The First Affiliated Hospital of University of South China Hengyang Hunan Province China
2. Department of Gastroenterology The First Affiliated Hospital of University of South China Hengyang Hunan Province China
3. Department of Otorhinolaryngology The First Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong Province China
4. NHC Key Laboratory of Pulmonary Immunological Diseases, Clinical Research Lab Center, Guizhou Provincial People's Hospital Guiyang Guizhou China