No author listed. Communicable Diseases Intelligence volume 5 issue 6 - 27 March 1981 - whole issue. Commun Dis Intell (2018) [Internet]. 1981 Mar. 27 [cited 2026 Apr. 15];5:1-16. Available from: https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/3167