1. Department of Ultrasound Diagnosis, Lanzhou University Second Hospital, Lanzhou, China
2. Department of Pain, Lanzhou University Second Hospital, Lanzhou, China
3. Department of Pediatric Orthopedics, Lanzhou University Second Hospital, Lanzhou, China
4. State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, China