1. The First Affiliated Hospital, Department of Otolaryngology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
2. Cancer Research Institute, Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, University of South China, Hengyang, Hunan, China
3. The First Affiliated Hospital, Department of Gastroenterology, Hengyang Medical School, University of South China, Hengyang, Hunan, China
4. Otolaryngology Major Disease Research, Key Laboratory of Hunan Province, Central South University, Changsha, Hunan, China