No author listed. Communicable Diseases Intelligence volume 13 issue 21 - 23 October 1989 - whole issue. Commun Dis Intell (2018) [Internet]. 1989 Oct. 23 [cited 2026 Apr. 4];13:1-20. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2982