1. School of Information Science and Engineering, Shandong University, Qingdao, China
2. School of Software, Shandong University, Jinan, China
3. Special Examination Department, Shandong Provincial Third Hospital, Jinan, China
4. Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
5. Department of Medical Imaging, Western University, London, ON, Canada