McIntyre, Peter B, Timothy C Heath, Edward D O'Brien, and Brynley P Hull. “Current Issues in Immunisation (National Immunisation Coverage - Interpreting the First Three Quarterly Reports from the ACIR)”. Communicable Diseases Intelligence 22 (June 11, 1998): 111–112. Accessed April 8, 2026. https://ojs.cdi.cdc.gov.au/index.php/cdi/article/view/2119.