Bick, F.
Iffland, Y.
Zimmermann, E.
Welsch, F.
Hoffmann, R.
Stein, Thomas http://orcid.org/0000-0002-9970-3528
Article History
Received: 7 September 2017
Accepted: 17 July 2018
First Online: 3 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The local Ethics Committee approved all the procedures performed (Ethic Committee of “Landesärztekammer Hessen, Frankfurt am Main”, ID number FF 81/2014).
: All the subjects gave their informed consent to the procedures.