1. Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510316, China
2. Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangzhou 510500, China
3. National Engineering Research Center for Healthcare Devices, Guangzhou 510500, China
4. Department of Ultrasonography, The Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics, Guangzhou 510515, Guangdong Province, China
5. Foshan Clinical Medical School of Guangzhou University of Chinese Medicine, Foshan 528031, Guangdong Province, China