“Botulinum toxin-A in the treatment of upper facial wrinkles: Efficacy comparison of different formulations”, Ann Med Res , vol. 30, no. 10, pp. 1347–1352, Oct. 2023, Accessed: Apr. 26, 2025. [Online]. Available: http://www.annalsmedres.org/index.php/aomr/article/view/4555