Kaufmann, Kai B. http://orcid.org/0000-0002-9511-6633
Baar, Wolfgang
Rexer, Judith
Loeffler, Thomas
Heinrich, Sebastian
Konstantinidis, Lukas
Buerkle, Hartmut
Goebel, Ulrich
Article History
Received: 23 January 2018
Accepted: 25 May 2018
First Online: 6 June 2018
Ethics approval and consent to participate
: This randomized clinical two-arm parallel study was approved by the local Ethics Committee, Freiburg, Germany [EK 160/15, PI: U. Goebel] and registered in the German Clinical Trials Register (DRKS No. 00008778, 16th of June, 2015). Written informed consent to participate in this study was obtained from each patient prior to study enrollment.
: Consent for publication was obtained from each patient enrolled in this study.
: The authors declare that they have no competing interests.
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