| "2009-10 Influenza (Flu) Season." CDC. 1 Oct. 2009. Centers for Disease Control and Prevention. 27 Oct. 2009 <http://www.cdc.gov/flu/about/season/current-season.htm>. "Influenza." eMedicine Specialties. 12 Aug. 2009. WebMD Inc. 27 Oct. 2009 <http://emedicine.medscape.com/article/219557-overview>. |
Source: Medical Disability Advisor