1. Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
2. Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, the Affliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
3. Department of Gastroenterology, the People’s Hospital of Lianshui, Huaian, Jiangsu province, China
4. Department of Nursing, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
5. Department of Endoscopic Medicine, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China