The use of botulinum toxin in the treatment of peripheral facial palsy. Research, Society and Development, [S. l.], v. 10, n. 9, p. e8510917935, 2021. DOI: 10.33448/rsd-v10i9.17935. Disponível em: https://rsdjournal.org/rsd/article/view/17935. Acesso em: 5 dec. 2025.