Tomaszewski, Mateusz. “Botulinum Toxin and Hyaluronic Acid — the Most Common Facial Aesthetic Medicine Treatments — the Economic Aspect in Terms of Price in 2019 in Poland”. Journal of Face Aesthetics 3, no. 1 (July 16, 2020): 16–26. Accessed May 2, 2024. https://jofa.ump.edu.pl/index.php/jofa/article/view/25.