1. Deaths: final data for 2006;Heron;Natl Vital Stat Rep,2009
2. Trends in pneumonia and influenza morbidity and mortality;Morbidity and Mortality Weekly Report,2010
3. Insights into the interaction between influenza virus and pneumococcus;McCullers;Clin Microbiol Rev,2006
4. Centre for Disease Control and Prevention Advisory Committee on Immunization Practices (ACIP), Universal Annual Influenza Vaccination. February 24, 2010.
5. Chartbook on cardiovascuar, lung, and blood diseases, 2009,2009