Intramuscular versus intradermal botulinum toxin for forehead wrinkles: a review of side effects and efficacy. Dermatology Reports, [S. l.], v. 16, n. 1, 2023. DOI: 10.4081/dr.2023.9799. Disponível em: https://journals.pagepress.org/dr/article/view/9799. Acesso em: 19 jun. 2025.