Funding for this research was provided by:
The Swedish Research Council for Sport Science
The Faculty of Medicine, Lund University
Governmental funding of clinical research within the NHS
Received: 20 April 2021
Accepted: 9 July 2021
First Online: 24 July 2021
: Ethical approval was received from the Regional Ethical Review Board in Lund, Sweden (2012/745 and 2013/2). All participants achieved written information and both the athlete and their caregivers signed informed consent forms. Also, the study is consistent with World Medical Association Declaration of Helsinki article 23 [CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.