Doktor, Klaus http://orcid.org/0000-0001-8483-9361
Hartvigsen, Jan
Hancock, Mark
Christensen, Henrik Wulff
Fredberg, Ulrich
Boyle, Eleanor
Kindt, Morten
Brix, Lau
Jensen, Tue Secher
Funding for this research was provided by:
Foundation for Advancement of Chiropractic Research and Postgraduate Education
Article History
Received: 25 August 2021
Revised: 18 April 2022
Accepted: 18 April 2022
First Online: 10 May 2022
Declarations
:
: All persons participating in this project provided written informed consent. Approval by the local ethical committee was not needed due to the study’s methodological nature. A letter of exemption from Regional Committee on Health Research Ethics is available from the author on request (case no. 48336). According to journal number 2015–414037, the Danish Data Protection Agency has approved the project. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare no competing interests.
: Information on authors’ affiliations is found on the first page of this article.