1 Affiliated Hospital of Inner Mongolia Medical University, Department of Orthopedics, Hohhot North Street, Inner Mongolia, 010050, China.
2 Affiliated Hospital of Inner Mongolia Medical University, Department of Anesthesiology, Hohhot North Street, Inner Mongolia, 010050, China.
3 Affiliated Hospital of Inner Mongolia Medical University, Department of Orthopedics, Hohhot North Street, Inner Mongolia, 010050, China. Electronic address: hdd81@163.com.