Received: 22 July 2020
Accepted: 6 May 2021
First Online: 26 May 2021
: This study received exemption from comprehensive application form the Medical Ethics Committee of the Erasmus MC Rotterdam, The Netherlands (MEC-2016-237). Before inclusion, written informed consent was acquired from all players and parents (in case of players with age below 18 years).
: Written informed consent to publish images was obtained from the selected participants.
: There are no conflicts of interest to disclose.