Lewandowska, Anna, Dorota Ratuszek-Sadowska, Jarosław Hoffman, Anetta Hoffman, Monika Kuczma, Iwona Ostrowska, and Wojciech Hagner. “The Frequency of Osgood-Schlatter Disease in Adolescence Training Football”. Journal of Education, Health and Sport 7, no. 7 (July 31, 2017): 950–958. Accessed July 20, 2024. https://apcz.umk.pl/JEHS/article/view/4838.