1. Influenza vaccination in 18 developed countries, 1980–1992;Fedson;Vaccine,1995
2. Pneumococcal vaccination in the United States and 20 other developed countries, 1981–1996 [see comments];Fedson;Clin Infect Dis,1998
3. Commonwealth Department of Health and Ageing. Commonwealth Government to provide pneumococcal vaccine for both young and old. Commonwealth Department of Health and Ageing, Canberra, 2004.
4. Improving pneumococcal vaccination coverage among older people in Victoria;Andrews;Med J Aust,2000
5. Measurement of influenza vaccination status of the elderly by mailed questionnaire: response rate, validity and cost;Hutchison;Can J Public Health,1989