1. Department of Gastrointestinal and Thyroid and Vascular Surgery, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
2. Department of Ultrasound, The Second Xiangya Hospital of Central South University, Changsha, China
3. Department of Gastroenterology, Second Affiliated Hospital, Zhengzhou University, Zhengzhou, China
4. Department of Otorhinolaryngology-Head and Neck surgery, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
5. Research Center of Ultrasonography, The Second Xiangya Hospital of Central South University, Changsha, China
6. Department of Gastroenterology, The Second Xiangya Hospital of Central South University, Changsha, China
7. Department of Gastroenterology, First Affiliated Hospital, Shenzhen University, Shenzhen, China
8. Institute of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China