Health insurance companies finally take to the Web.
D003256:Community Participation; D003258:Consumer Behavior; D006293:Health Promotion; D006801:Humans; D007255:Information Services / Q000600:supply & distribution*; D007343:Insurance Carriers / Q000639:trends*; D007348:Insurance, Health / Q000639:trends*; D020407:Internet / Q000706:statistics & numerical data*; D008389:Marketing of Health Services / Q000639:trends*; D010817:Physician-Patient Relations; D014481:United States; D014584:User-Computer Interface