Zhao, Xiuyuan
Xu, Xiaolin
Li, Qingyun
Article History
Received: 14 November 2019
Revised: 8 January 2020
Accepted: 10 January 2020
First Online: 31 January 2020
Change Date: 8 February 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1007/s00415-020-10337-0
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.