The enigma of adherence to therapy. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 19, n. 5, p. 522, 2003. DOI: 10.32385/rpmgf.v19i5.9983. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/9983. Acesso em: 19 apr. 2026.