1. Department of Ultrasound, Shandong Medical Imaging Research Institute, Jinan, Shandong, China (mainland)
2. Department of Rehabilitation, Liaocheng People’s Hospital, Liaocheng, Shandong, China (mainland)
3. Department of Ultrasound, Liaocheng People’s Hospital, Liaocheng, Shandong, China (mainland)
4. Department of Ultrasound, Liaocheng People’s Hospital, Liaocheng, China (mainland)