1. Department of Radiology The Second Hospital, Dalian Medical University Dalian Liaoning People's Republic of China
2. Department of Radiology Suzhou Hospital of Anhui Medical University Suzhou Anhui People's Republic of China
3. Department of Radiology Huashan Hospital affiliated to Fudan University Shanghai People's Republic of China
4. Department of Pathology The Second Hospital, Dalian Medical University Dalian Liaoning People's Republic of China