Michael Traeger, Max https://orcid.org/0000-0003-1987-4798
Rehkaemper, Jan
Ullerich, Hansjoerg
Steinestel, Konrad https://orcid.org/0000-0002-6549-9848
Wardelmann, Eva https://orcid.org/0000-0001-6788-4910
Senninger, Norbert https://orcid.org/0000-0003-0945-9697
Abdallah Dhayat, Sameer https://orcid.org/0000-0002-5314-9736
Article History
Received: 25 April 2018
Accepted: 18 September 2018
First Online: 22 September 2018
Compliance with ethical standards
:
: All authors declare that they have no conflicts of interest.
: This article does not contain any studies with animals performed by any of the authors. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.