Künzli, B. M.
Walensi, M.
Wilimsky, J.
Bucher, C.
Bührer, T.
Kull, C.
Zuse, A.
Maurer, C. A.
Article History
Received: 29 March 2019
Accepted: 10 June 2019
First Online: 26 June 2019
Compliance with ethical standards
:
: 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.
: The authors declare that they have no conflict of interest.