LIMA, Sylvio Ricard Gonçalves de Souza et al. Polycythemia in a Young Patient as a Probable Cause of Cerebral Venous Thrombosis. Headache Medicine, [S. l.], v. 14, n. Supplement, p. 151, 2023. Disponível em: https://headachemedicine.com.br/index.php/hm/article/view/972. Acesso em: 31 dec. 2025.