1)Moberley SA, Holden J, Tatham DP, et al:Vaccines for preventing pneumococcal infection in adults. Cochrane Database Syst Rev, 2008 ID:CD000422
2)Centers for Disease Control and Prevention:Recommended adult immunization schedule─United States, 2009. MMWR Morb Mortal Wkly Rep 57, 2008
3)Jefferson TO, Rivetti D, Di Pietrantonj C, et al:Vaccines for preventing influenza in healthy adults. Cochrane Database Syst Rev, 2007 ID:CD001269
4)Jefferson T, Rivetti D, Rivetti A, et al:Efficacy and effectiveness of influenza vaccines in elderly people:a systematic review. Lancet 366, 2005
5)Fiore AE, Shay DK, Broder K, et al:Prevention and control of influenza. Recommendations of the Advisory Committee on Immunization Practices(ACIP), 2008. MMWR Recomm Rep 57, 2008
6)Jefferson T, Rivetti A, Harnden A, et al:Vaccines for preventing influenza in healthy children. Cochrane Database Syst Rev, 2008 ID:CD004879