Graf, Jonas
Schwitalla, Jan Claudius
Albrecht, Philipp
Veltkamp, Roland
Berlit, Peter
Hartung, Hans-Peter
Aktas, Orhan
Kraemer, Markus http://orcid.org/0000-0002-5667-3621
Article History
Received: 9 January 2019
Revised: 9 February 2019
Accepted: 14 February 2019
First Online: 25 February 2019
Compliance with ethical standards
:
: Authors report no conflicting interests.
: This study was approved by local ethical committee.