Węgrzyniak, Agata, Wojciech Wokurka, Iga Dudek, and Piotr Piech. “What Are the Newest Outcomes about Legg-Calve-Perthes Disease Etiology After 110 Years over Its Discovering ? – Literature Review”. Journal of Education, Health and Sport 11, no. 9 (September 21, 2021): 396–400. Accessed June 29, 2025. https://apcz.umk.pl/JEHS/article/view/35371.