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Article History

Received: 17 June 2019

Accepted: 24 September 2019

First Online: 19 November 2019

Ethics approval and consent to participate

: The representatives of the NSFs and sports clubs were informed about the background and aims of the study through email (written) and before the start of the interview (verbally). In addition, they were informed that participation was voluntary, all collected information would be kept strictly confidential and only anonymized data would be published. They were free to ask questions about the research and could contact the researcher for questions by email or telephone. Written informed consent for participation in the study was obtained from the NSFs (at the interview location) and sports clubs (through email). Participants were not exposed to procedures, nor were they obligated to follow certain behavioral rules. Therefore, in accordance with the Dutch Medical Research Involving Human Subjects Act (WMO), medical ethics committee’s approval was not necessary for conducting this study []. The study was performed according to General Data Protection Regulations [].

: Not applicable.

: The authors declare that they have no competing interests.