Database Center for Disease Control. A lot of information on diseases, symptoms and outbreaks. Research, updates, etc on diabetes. Database Carries many of your course books at discounted prices. Be careful, but students have reported saving money by ordering online.
Site says it buys too.
This site includes US government reports and statistics which are useful in research papers. This is the Galter Library at Northwestern University. It includes links to MedLine, HealthWeb, e-journals and so on. Nice starting place to find other things. This is the site for the Health Care Finance Administration.