Zhang, Xin
Yao, Zhi-Qiang
Karuna, Tamrakar
He, Xu-Ying
Wang, Xue-Min
Li, Xi-Feng
Liu, Wen-Chao
Li, Ran
Guo, Shen-Quan
Chen, Yun-Chang
Li, Gan-Cheng
Duan, Chuan-Zhi http://orcid.org/0000-0002-2025-8637
Article History
Received: 10 April 2018
Revised: 1 June 2018
Accepted: 21 June 2018
First Online: 17 July 2018
Compliance with ethical standards
:
: The scientific guarantor of this publication is Chuan-Zhi Duan who works in the Department of Neurosurgery, Zhujiang Hospital, Southern Medical University.
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: Prof. Chi Chen, who has significant statistical expertise (Department of Health Statistics of Guizhou University of TCM, Guiyang City, China), kindly provided statistical advice for this manuscript.
: This is a retrospective and cross-sectional study. The data are anonymous, and the requirement for written informed consent was waived by the Institutional Review Board. However, the informed consent concerning the DSA procedure was signed by each patient before the operation.
: Approval for this study was obtained from the local Institutional Review Board of the participating centers. Ethics approval was obtained from the Institutional Review Board of Southern Medical University Zhujiang Hospital and the First Affiliated Hospital of Zhengzhou University.
: • retrospective• cross-sectional study• multicenter study