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KUCHNICKA, Julia, REMJASZ, Klaudia, SIEDLECKI, Wojciech, ALEKSANDROWICZ, Jakub and FABIŚ , Mateusz. Botulinum toxin - introduction, indications and safety of usage . Journal of Education, Health and Sport. Online. 27 August 2022. Vol. 12, no. 9, pp. 41-46. [Accessed 8 July 2024]. DOI 10.12775/JEHS.2022.12.09.005.