1. Influenza vaccination and special risk groups;Nicholson, K.,1988
2. Influenza vaccination. Cost-effectiveness and public policy;Riddiough, M.A.; Sisk, J.E.; Bell, J.C.;JAMA,1983
3. Influenza vaccination and mortality from bronchopneumonia in the elderly;Havells, C.H.L.; Vesselinova-Jenkins, C.K.; Evans, A.D.; James, J.;Lancet,1975
4. Influenza vaccination of elderly persons. Reduction in pneumonia and influenza hospitalisations and deaths;Barker, W.; Mullooly, J.P.;JAMA,1980
5. Experiences in the use and efficacy of inactivated influenza vaccine in nursinghomes;Arden, N.H.; Patriarca, P.A.; Kendal, A.P.,1986