Irish, C., Alli, M., Gilham, C., Joseph, C., & Watson, J. (1998). Influenza vaccine uptake and distribution in England and Wales, July 1989-June 1997. Health Trends.
Joseph, C., Goddard, N., & Gelb, D. (2005). Influenza vaccine uptake and distribution in England and Wales using data from the General Practice Research Database, 1989/90-2003/04. J Public Health (Oxf). http://doi.org/10.1093/pubmed/fdi054
