NO AUTHOR LISTED. Communicable Diseases Intelligence volume 4 issue 20 - 10 October 1980 - whole issue. Communicable Diseases Intelligence, [S. l.], v. 4, p. 1–19, 1980. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3208. Acesso em: 17 apr. 2026.