No author listed. Communicable Diseases Intelligence volume 14 issue 20 - 8 October 1990 - whole issue. Commun Dis Intell (2018) [Internet]. 1990 Oct. 8 [cited 2026 Jul. 12];14:1-22. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2953