1. Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
2. Department of Radiology, Nanjing Gaochun People’s Hospital, Nanjing, Jiangsu, China (mainland)
3. Department of Radiology, The Second Hospital of Nanjing, Nanjing, Jiangsu, China (mainland)