NO AUTHOR LISTED. Communicable Diseases Intelligence volume 15 issue 19 - 23 September 1991 - whole issue. Communicable Diseases Intelligence, [S. l.], v. 15, p. 327–349, 1991. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2927. Acesso em: 22 apr. 2026.