No author listed. Communicable Diseases Intelligence volume 14 issue 7 - 9 April 1990 - whole issue. Commun Dis Intell (2018) [Internet]. 1990 Apr. 9 [cited 2026 Apr. 13];14:1-21. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2940