Protective effect of caffeine in Parkinson’s disease: Systematic review. REVISTA CIENTÍFICA SIGNOS FÓNICOS, [S. l.], v. 9, n. 1, p. 55–65, 2023. DOI: 10.24054/rcsf.v9i1.2436. Disponível em: https://ojs.unipamplona.edu.co/index.php/cdh/article/view/2436. Acesso em: 16 oct. 2025.