Funding for this research was provided by:
Received: 10 June 2019
Accepted: 3 February 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: This research was conducted in accordance with the Declaration of Helsinki and was approved by Independent Review Boards in the US (Copernicus Group Independent Review Board) and Germany (Freiburger Ethik-Kommission International). Ethics approval in France was not required for this research, but this study was conducted in compliance with local ethics rules relating to the French personal data protection law stipulated by the data protection authority - Commission nationale de l’informatique et des libertés. Written informed consent was obtained from all study participants before taking part in this research.
: Data presented is anonymised and all identifiable information has been removed. Declarations of consent signed by participants made it clear that data may be used for the purposes of publication.
: AG and FT are employees of Adelphi Values, a health-outcomes consultancy commissioned to conduct this research on behalf of Bayer AG. CS, CG, KW and CH are Bayer AG employees. The authors have no other conflicts of interest regarding the content of this article.