Funding for this research was provided by:
European Organisation for Research and Treatment of Cancer (001 2015)
Received: 5 June 2020
Accepted: 30 July 2020
First Online: 12 August 2020
Ethics approval and consent to participate
: No ethics approval was sought as the study is based on panel data. According to the NHS Health Research Authority and the European Pharmaceutical Market Research Association (EphMRA), panel research does not require ethical approval if ethical guidelines are followed. The survey was distributed via the GfK SE (member of EphMRA) and obtained informed consent by each participant before the study. All data were collected anonymously and identification of the respondents through the authors is impossible.
: Not applicable.
: The authors declare that they have no competing interests.