1. Department of Radiology, The China Japan Union Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
2. Department of Emergency, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
3. Department of Gastrointestinal Medicine, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
4. Department of General Surgery, The China Japan Union Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
5. Department of Interventional Therapy, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China