Hugul H, Gumus EC, Kutlubay Z. Botulinum toxin-A in the treatment of upper facial wrinkles: Efficacy comparison of different formulations. annalsmedres [Internet]. 2023 Oct. 25 [cited 2024 Jul. 22];30(10):1347-52. Available from: http://annalsmedres.org/index.php/aomr/article/view/4555