Incidence of calcaneal apophysitis (Sever's disease) and return-to-play in adolescent athletes of a German youth soccer academy: a retrospective study of 10 years. - Belikan, Patrick; Färber, Lars-Christopher; Abel, Frédéric; Nowak, Tobias E.; Drees, Philipp; Mattyasovszky, Stefan G. (Journal of Orthopaedic Surgery & Research, 2022)