NO AUTHOR LISTED. Communicable Diseases Intelligence volume 5 issue 7 - 10 April 1981 - whole issue. Communicable Diseases Intelligence, [S. l.], v. 5, p. 1–18, 1981. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3169. Acesso em: 12 jul. 2026.