Neurological adverse events after vaccination against sars-cov-2 in the municipality of Parnaíba, Piauí. Headache Medicine, [S. l.], v. 13, n. Supplement, p. 50, 2022. DOI: 10.48208/HeadacheMed.2022.Supplement.50. Disponível em: https://headachemedicine.com.br/hm/article/view/710. Acesso em: 22 jan. 2026.