No author listed. Communicable Diseases Intelligence volume 5 issue 23 - 20 November 1981 - whole issue. Commun Dis Intell (2018) [Internet]. 1981 Nov. 20 [cited 2026 Apr. 15];5:1-11. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3185