Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01EO1501)
Text and Data Mining valid from 2019-07-12
First Online: 12 July 2019
Compliance with Ethical Standards
: The study was approved by the Ethics Committee of the University of Leipzig (approval number 267-15-24082015).
: CLS has received honoraria from Ethicon (Johnson & Johnson) for talks and consultation. All other authors declare that they have no conflict of interest.