Schmalz, Gerhard
Douglas, Donya
Douglas, David
Patschan, Susann
Patschan, Daniel
Müller, Gerhard A.
Haak, Rainer
Schmickler, Jan
Ziebolz, Dirk http://orcid.org/0000-0002-9810-2368
Article History
Received: 24 July 2017
Accepted: 31 January 2018
First Online: 7 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was reviewed and approved by the Ethics Committee of the University Medical Center in Goettingen, Germany (application No. DOK_296_2015).
: Patients were informed verbally and in writing about the study and gave written informed consent.