Comparison of botulinum toxin and propranolol for essential and dystonic vocal tremors. Clinics, [S. l.], v. 73, p. e87, 2019. DOI: 10.6061/clinics/2018/e87. Disponível em: https://revistas.usp.br/clinics/article/view/154705.. Acesso em: 7 may. 2024.