Received: 15 October 2019
Accepted: 3 April 2020
First Online: 19 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethic Committee of the University of Paris-Saclay (File no: 2017/11).
: Not applicable.
: The authors report that they have no competing interests. CLY is a senior editorial adviser to the journal Chiropractic & Manual Therapies but played no part in the peer review of the submission.