1. Department of Orthopaedics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, PR China;
2. Department of Intervention, The Second Affiliated Hospital of Soochow University, Suzhou, PR China;
3. Department of Ultrasonography, Suzhou Science and Technology Town Hospital, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, PR China;
4. Department of Ultrasound, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China