1. School of Medical Information, Xuzhou Medical University, Xuzhou, China
2. Key Laboratory of Intelligent Industrial Control Technology of Jiangsu Province, College of Information and Electrical Engineering, Xuzhou University of Technology, Xuzhou, China
3. Department of Computer Science and Engineering, State University of New York at Buffalo, Buffalo, USA
4. Department of Medical Imaging, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China