Rupp, T.
Butscheidt, S.
Vettorazzi, E.
Oheim, R.
Barvencik, F.
Amling, M.
Rolvien, T.
Article History
Received: 13 November 2018
Accepted: 21 April 2019
First Online: 1 May 2019
Compliance with ethical standards
: This study was performed in accordance with the Declaration of Helsinki and the rules of the local ethics committee (HmbKHG ยง12).
: None.