1. Department of Orthopaedics, Rongcheng People’s Hospital of Shandong Province, Rongcheng, Shandong, China
2. Department of Neurology, Rongcheng People’s Hospital of Shandong Province, Rongcheng, Shandong, China
3. Department of Orthopaedics, Jining Second People’s Hospital of Shandong Province, Jining, Shandong, China