No author listed. Communicable Diseases Intelligence volume 13 issue 8 - 24 April 1989 - whole issue. Commun Dis Intell (2018) [Internet]. 1989 Apr. 24 [cited 2026 Apr. 22];13:1-18. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2968