Funding for this research was provided by:
National Natural Science Foundation of China (No. 81671251,81971185)
The Clinical Research Innovation Plan of Shanghai General Hospital (CTCCR-2018B03)
Received: 28 December 2018
Accepted: 28 October 2019
First Online: 19 November 2019
Ethics approval and consent to participate
: The study did not involve patients and no consent was required. The Shanghai General Hospital Institutional Review Board ruled that no formal ethics approval was required since this study did not involve the patient participation.
: Not applicable.
: Yun-Cheng Wu is an Editorial Board Member of BMC Neurology. Other authors declare that they have no competing interests.