About the Authors

Guocai Guo

Affiliation Department of Neurosurgery, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China

Weicheng Yao

Affiliation Department of Neurosurgery, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China

Quanqin Zhang

Affiliation Department of Internal Medicine, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China

Yongli Bo

yonglibo@gmail.com

Affiliation Department of Neurosurgery, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YB. Performed the experiments: GG QZ. Analyzed the data: GG YB. Contributed reagents/materials/analysis tools: WY YB. Wrote the paper: YB.