Lohrberg, A. http://orcid.org/0000-0002-7976-6919
Schmale, O. http://orcid.org/0000-0003-2987-4900
Ostrovsky, I. http://orcid.org/0000-0002-0247-7844
Niemann, H. http://orcid.org/0000-0002-3468-8304
Held, P. http://orcid.org/0000-0001-8867-3637
Schneider von Deimling, J. http://orcid.org/0000-0002-9889-1408
Article History
Received: 6 November 2018
Accepted: 5 February 2020
First Online: 10 March 2020
Competing interests
: The authors declare no competing interests.