Stecko, Monika, Agata Wawryków, Katarzyna Korabiusz, Magda Fraszczyk, and Agnieszka Kordek. 2019. “Use of Botulinum Toxin in Children With Cerebral Palsy”. Journal of Education, Health and Sport 9 (7):699-702. https://apcz.umk.pl/JEHS/article/view/7178.