1. Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
2. Department of Radiation Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
3. Department of Neurology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China