Funding for this research was provided by:
Verein zur Förderung der Forschung und Weiterbildung in der Sportraumatologie e.V.
Text and Data Mining valid from 2019-03-14
Received: 28 April 2018
Accepted: 7 March 2019
First Online: 14 March 2019
Ethics approval and consent to participate
: This study was approved by the ethical committee of Witten/Herdecke University (Application No. 109/2010). Written informed consent was obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.
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