Tkatschenko, Dimitri
Kendlbacher, Paul
Czabanka, Marcus
Bohner, Georg
Vajkoczy, Peter
Hecht, Nils http://orcid.org/0000-0001-9989-649X
Article History
Received: 20 August 2019
Revised: 12 October 2019
Accepted: 28 November 2019
First Online: 9 December 2019
Compliance with ethical standards
:
: Peter Vajkoczy has served as a consultant for Aesculap and Ulrich Medical. The other authors declare that they have no conflict of interest.