NO AUTHOR LISTED. Communicable Diseases Intelligence volume 15 issue 14 - 15 July 1991 - whole issue. Communicable Diseases Intelligence, [S. l.], v. 15, p. 227–242, 1991. Disponível em: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2921. Acesso em: 7 apr. 2026.