Funding for this research was provided by:
Fonds de dotation pour la recherche en chiropratique
Received: 4 July 2019
Accepted: 23 December 2019
First Online: 20 January 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the University of Paris-Sud N°07–0916.
: Not applicable.
: The authors declare that they have no competing interests. CLY is a senior advisor at the Journal but played no role in the review process.