Most prevalent symptoms associated with headache in COVID-19 patients in the acute phase: a systematic review. Headache Medicine, [S. l.], v. 12, n. 2, p. 105–109, 2021. DOI: 10.48208/HeadacheMed.2021.20. Disponível em: https://headachemedicine.com.br/hm/article/view/456. Acesso em: 22 jan. 2026.