1. Department of Medical Ultrasound, Tenth People's Hospital of Tongji University, Shanghai Tenth People's Hospital, Shanghai, China
2. Department of Medical Ultrasonics, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
3. Department of Ultrasound, Zhongshan Hospital of Fudan University, Shanghai, China
4. Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated 6th People's Hospital, Shanghai, China
5. Department of Ultrasound, Peking University School of Oncology, Beijing Cancer Institute, Beijing, China
6. Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China
7. Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing, China
8. Department of Ultrasound, Second Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China