1. Acute respiratory infections;World Health Organization,2009
2. Prevention and control of seasonal influenza with vaccines. Recommendations of the Advisory Committee on Immunization Practices (ACIP), 2009;Centers for Disease Control and Prevention;Morb Mortal Wkly Rep,2009
3. Vaccine production capacity for seasonal and pandemic (H1N1) 2009 influenza;Collin;Vaccine,2009
4. Guideline on seasonal influenza vaccination during the 2009–2010 season in China;Chinese Center for Disease Control and Prevention,2009
5. China statistical yearbook 2005;National Bureau of Statistics of China,2005