1. Department of Neurological Surgery, the Second Hospital of Hebei Medical University, Shijiazhuang, China
2. Department of Pharmacy, the Second Hospital of Hebei Medical University, Shijiazhuang, China
3. Department of Clinical Laboratory, the Second Hospital of Hebei Medical University, Shijiazhuang, China
4. Institute for Drug Control of Hebei Province, Shijiazhuang, China