NO AUTHOR LISTED. Communicable Diseases Intelligence volume 15 issue 20 - 7 October 1991 - whole issue. Communicable Diseases Intelligence, [S. l.], v. 15, p. 351–372, 1991. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2928. Acesso em: 11 apr. 2026.