JJohn Horder 1919-2012. Portuguese Journal of Family Medicine and General Practice, [S. l.], v. 28, n. 3, p. 157–8, 2012. DOI: 10.32385/rpmgf.v28i3.10936. Disponível em: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10936. Acesso em: 17 apr. 2026.