Asker, Martin http://orcid.org/0000-0002-5387-3572
Holm, Lena W.
Källberg, Henrik
Waldén, Markus
Skillgate, Eva
Funding for this research was provided by:
Centrum for Idrottsforskning (CIF 2015/11, CIF 2016/6)
Folksam Insurance Company
Swedish Naprapathic Association
Article History
Received: 13 November 2017
Accepted: 2 February 2018
First Online: 10 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Regional Ethics Review Board of the Karolinska Institutet, Sweden (2013/1722-31/4).
: All participating players, and legal guardians when appropriate, gave written informed consent before entering the study.