Funding for this research was provided by:
Dansk Kiropraktor Forening (10/534)
IMK almene fond
Text and Data Mining valid from 2019-12-01
Received: 24 April 2019
Accepted: 12 September 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: All parents gave written informed consent to participation on behalf of their child and the children gave oral consent. A child could be withdrawn from the study at any time during the study period and the study was conducted according to the Declaration of Helsinki. The project was approved by the Regional Committee on Health Research Ethics (#S-20110042) and data were handled according to the regulations set by the Danish Data Protection Agency (#2013-41-1738).
: Not applicable.
: The authors declare that they have no competing interests.