Boelch, Sebastian P. http://orcid.org/0000-0001-8215-5126
Arnholdt, Joerg
Holzapfel, Boris M.
Jakuscheit, Axel
Rudert, Maximilian
Hoberg, Maik
Article History
Received: 16 January 2018
Accepted: 8 May 2018
First Online: 22 May 2018
Compliance with ethical standards
: For this study protocol, we received institutional review board approval (approval no. 195/10) from the University. It was conducted according to the principles of the World Medical Association Declaration of Helsinki.
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.