1. Department of NeurosurgeryThe People's Hospital of ZhengzhouZhengzhou450002 HenanChina
2. Department of NeurosurgeryThe Third People's Hospital of QingdaoQingdao266041ShandongChina
3. Department of NeurosurgeryBrain HospitalPeople's Hospital of WeifangWeifang261021ShandongChina
4. Department of NeurosurgeryQianfoshan Hospital Affiliated to Shandong UniversityJinan250014ShandongChina