Funding for this research was provided by:
European Centre for Chiropractic Research Excellence (25-2018-SE/AE)
Received: 14 April 2021
Accepted: 24 July 2021
First Online: 2 August 2021
: Information about the study was sent via e-mail to participants who had agreed to participate. They were then given further information about the study verbally. Participation was voluntary, and the informants were told that they could withdraw at any time. Informed consent was obtained from the participants prior to the interviews, and full confidentiality was guaranteed. None of the information collected was identifiable, thus ensuring data anonymity. The study was conducted according to the tenets of the World Medical Association Declaration of Helsinki and approved by the Regional Ethical Review Board in Stockholm (Dnr 2019-04505).
: Not applicable.
: The authors declare that they have no competing interests.