Wiedmer, Christoph
Buettner, Andrea http://orcid.org/0000-0002-6205-5125
Article History
Received: 9 March 2019
Revised: 11 April 2019
Accepted: 18 April 2019
First Online: 11 May 2019
Compliance with ethical standards
: The study was conducted in agreement with the Declaration of Helsinki. The study (registration number 180_16B) was approved by the Ethical Committee of the Medical Faculty, Friedrich-Alexander Universität Erlangen-Nürnberg. Informed consent was obtained from all subjects participating in the study.
: The authors declare that they have no conflict of interest.