Funding for this research was provided by:
Bayerisches Staatsministerium für Wirtschaft und Medien, Energie und Technologie (07 03/686 68/ 122/18/4/19, 07 03/686 91/7/18/8/19/9/20)
EIT Health (NA)
Text and Data Mining valid from 2019-06-26
Received: 18 December 2018
Accepted: 6 June 2019
First Online: 26 June 2019
Change Date: 26 July 2019
Change Type: Correction
Change Details: The original article  contained an error whereby Fig. 6 contained a minor shading glitch affecting its presentation. This has now been corrected.
Ethics approval and consent to participate
: The study was approved by the local ethics committee (IRB-approval-Re. -No. 4208, 21.04.2010, IRB, Medical Faculty, Friedrich-Alexander University Erlangen-Nuernberg, Germany) and all participants gave written informed consent according to the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.