1. Department of Nursing, Tangshan Central Hospital, Tangshan 063000, Hebei Province, China
2. Department of Neurology, Tangshan Gongren Hospital, Tangshan 063000, Hebei Province, China
3. Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan 063000, Hebei Province, China
4. Department of Rheumatology, Tangshan Central Hospital, Tangshan 063000, Hebei Province, China.