1. Department of Ultrasound Diagnosis, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu Province, China
2. Department of Pain, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu Province, China
3. Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu Province, China
4. Department of Ultrasound Diagnosis, Gansu Provincial Maternity and Child-Care Hospital, Lanzhou, 730030, Gansu Province, China
5. Department of Pneumology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu Province, China
6. Department of Emergency, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu Province, China