Brehmer, Detlef http://orcid.org/0000-0001-5148-9342
Bodlaj, Robert
Gerhards, Friedemann http://orcid.org/0000-0002-6099-6001
Article History
Received: 14 October 2018
Accepted: 24 December 2018
First Online: 3 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Ethics Commission at the University of Witten/Herdecke, Germany.
: The study was conducted in accordance with the principles of Goof Clinical Practices and Declaration of Helsinki (1964 and its revisions). Patients who provided written informed consent, were enrolled in the study.