1. Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China,
2. Department of Orthopedics, Jazeera University Hospital, Mogadishu BN SO 935, Somalia
3. Department of Orthopedic Traumatology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China