Funding for this research was provided by:
Deutsche Stiftung Neurologie
Article History
Received: 6 February 2020
Revised: 10 March 2020
Accepted: 13 March 2020
First Online: 28 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was conducted in accordance with the Declaration of Helsinki and approved by the local ethics committee.