Wu, Yijin http://orcid.org/0000-0002-2505-6575
Article History
Received: 13 July 2020
Accepted: 2 January 2021
First Online: 12 January 2021
Ethics approval and consent to participate
: This study was approved by the ethics committee of Center for neurolinguistics, Qufu Normal University. Written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.