This article has been accepted for publication in British Journal of Sports Medicine , 2018, following peer review, and the Version of Record can be accessed online at http://dx.doi.org/10.1136/bjsports-2017-097718. © Article author(s) (or their employer(s). Reuse of this manuscript version is permitted strictly pursuant to the terms of the Creative Commons Attribution-Non Commercial 4.0 International (CC-BY-NC 4.0). https://creativecommons.org/licenses/by-nc/4.0
Med mindre annet er angitt, så er denne innførselen lisensiert som This article has been accepted for publication in British Journal of Sports Medicine , 2018, following peer review, and the Version of Record can be accessed online at http://dx.doi.org/10.1136/bjsports-2017-097718. © Article author(s) (or their employer(s). Reuse of this manuscript version is permitted strictly pursuant to the terms of the Creative Commons Attribution-Non Commercial 4.0 International (CC-BY-NC 4.0). https://creativecommons.org/licenses/by-nc/4.0