*Department of Neurosurgery, Affiliated Hospital of Qingdao University, Qingdao, China

†Changzhou Hospital of Traditional Chinese Medicine, Jiangsu, China

‡Qingdao University, Qingdao, China

Address correspondence and reprint requests to Yu-Gong Feng, No.16 Jiangsu Road, Shinan District, Qingdao City, Shandong Province, China. E-mail: [email protected]

H.Z. and H.-J.L. are considered joint first author.

This work was financed by grant-in-aid for scientific research from the National Natural Science Foundation of China (No. 81870914).

The authors report no conflicts of interest.

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