High Risk of Bias and Low Transparency in “How Effective are F-MARC Injury Prevention Programs for Soccer Players? A Systematic Review and Meta-Analysis”
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All authors have contributed substantially to the conception, design and drafting of this letter, and/or revising it critically for important intellectual content, as well as approval of the final version.
Compliance with Ethical Standards
Kristian Thorborg is supported by the Department of Orthopaedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Amager-Hvidovre Hospital, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark. Else Marie Bartels/Parker Institute is funded by the OAK foundation. No sources of funding were used to assist in the preparation of this Letter to the Editor.
Conflicts of interest
Kristian Thorborg, Kasper Krommes, Ernest Esteve, Mikkel Bek Clausen, Else Marie Bartels, and Michael Skovdal Rathleff declare that they lodged a protocol for a systematic review with a similar scope to the article by Al Attar et al. with PROSPERO on 2 July 2015. This is available at the following link: http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42015024120. The investigators were unaware at that time that Al Attar et al. had submitted their manuscript to Sports Medicine for publication.
All authors declare they have no other potential conflicts of interest in relation to the content of this letter.
Al Attar et al. submitted their manuscript to Sports Medicine on 7 May 2015.
Thorborg et al. registered their protocol on PROSPERO on 2 July 2015.
The manuscript by Al Attar et al. was published online on 24 September 2015.
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