Funding for this research was provided by:
Bayerisches Staatsministerium für Umwelt und Verbraucherschutz
Text and Data Mining valid from 2019-09-10
Received: 22 June 2019
Revised: 8 August 2019
Accepted: 29 August 2019
First Online: 10 September 2019
Compliance with ethical standards
: There are no competing financial or nonfinancial interests to declare.
: 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.