Received: 13 December 2018
Accepted: 4 July 2019
First Online: 11 July 2019
Ethics approval and consent to participate
: No patients were exposed to any intervention. The Medical Ethical Commission of Maastricht University Medical Centre acknowledged that full ethical approval for the study protocol was not indicated. For the focus group, all participating patients provided written informed consent after anonymous data processing was explained. All patients and the researchers attending the focus group also vouched for secrecy of the discussion content. All focus group interview and questionnaire data were processed anonymously by coding the data.
: Not applicable.
: The authors declare that they have no competing interests.