1. School of Computer Science and Technology Shandong Technology and Business University Yantai China
2. School of Management Science and Engineering Shandong Technology and Business University Yantai China
3. Information Network Center Shandong Second Provincial General Hospital Jinan China
4. School of Mathematics and Information Science Shandong Technology and Business University Yantai China
5. Department of Radiology The Affiliated Hospital of Qingdao University Qingdao Shandong China