1. Department of Medical Imaging Liaoning Cancer Hospital & Institute Cancer Hospital of China Medical University Shenyang P. R. China
2. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Department of Cancer Epidemiology Peking University Cancer Hospital & Institute Beijing P. R. China
3. Department of pathology Liaoning Cancer Hospital & Institute Cancer Hospital of China Medical University Shenyang P. R. China
4. The First Clinical College Dalian Medical University Dalian P. R. China