Prien, Annika http://orcid.org/0000-0001-7792-2044
Boudabous, Sana
Junge, Astrid
Verhagen, Evert
Delattre, Bénédicte M. A.
Tscholl, Philippe M.
Funding for this research was provided by:
Fédération Internationale de Football Association
Article History
Received: 23 February 2019
Accepted: 6 June 2019
First Online: 17 June 2019
Compliance with ethical standards
:
: Annika Prien, Sana Boudabou, Astrid Junge, Evert Verhagen, Bénédicte M. A. Delattre and Philippe M. Tscholl declare that they have no conflict of interest.
: The study was funded by the Fédération Internationale de Football Association (FIFA).
: The study has ethic approval 2016-449-f-S of the ethics commission Münster, Germany.