Funding for this research was provided by:
Rijksinstituut voor Volksgezondheid en Milieu (S/133005)
Received: 13 August 2020
Accepted: 19 March 2021
First Online: 1 April 2021
: Written informed consent was obtained at the start of the interview. This research project has been assessed by the Centre for Clinical Expertise (CCE) at the National Institute for Public Health and the Environment in the Netherlands (reference number: VPZ-457). The CCE concluded that the research project is exempted from further review by a medical ethics committee as it does not fulfill the specific conditions as stated in the Dutch Medical Research Involving Human Subjects Act (WMO; <i>Wet Medisch-wetenschappelijk Onderzoek met mensen)</i>.
: Quotes that were used in this paper were approved by respondents.
: The authors declare that they have no competing interests.