Bacterial carriage and respiratory tract infections in subjects > or = 60 years during an influenza season: implications for the epidemiology of community acquired pneumonia and influenza vaccine effectiveness.
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F. Ansaldi | P. Durando | C. Alicino | M. Martini | G. Icardi | D. de Florentiis | V. Parodi | E. Rappazzo | M. Coppelli