No authors listed. Communicable Diseases Intelligence volume 17 issue 25 - 13 December 1993 - whole issue. Commun Dis Intell (2018) [Internet]. 1993 Dec. 13 [cited 2026 Apr. 11];17:590-617. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2874