Received: 14 June 2017
Accepted: 5 February 2018
First Online: 17 February 2018
Ethics approval and consent to participate
: The manuscript is based on routine data - which means that no extra data besides those necessary for care were collected for study reasons. The patients were informed about the treatment and the kind of data collection that would accompany their therapy. They gave written consent to be treated and to have their data collected and anonymously analyzed for scientific use. The data were anonymized, and the person who implemented the data analysis did not see any person-related information in the data and also did not see any patients in person so that it would be impossible to form a connection between sensitive data and real persons. The data were treated according to the German and Bavarian legislative rules for data protection. Routine data collection accompanies therapeutic action at the University Clinic Erlangen as a matter of quality assurance. This is in accordance with the ethical commission of the Friedrich-Alexander-Universität Erlangen-Nürnberg.
: Not applicable.
: The authors declare that they have no competing interests.
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