No author listed. Communicable Diseases Intelligence volume 13 issue 9 - 8 May 1989 - whole issue. Commun Dis Intell (2018) [Internet]. 1989 May 8 [cited 2026 Apr. 22];13:1-19. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2969