National healthcare information infrastructure.
D022126:Access to Information; D019992:Databases as Topic; D020408:Health Insurance Portability and Accountability Act; D007256:Information Systems / Q000458:organization & administration*; D020407:Internet; D016347:Medical Records Systems, Computerized; D009313:National Health Programs; D016134:Organizational Policy; D012952:Societies; D018511:Systems Integration; D014481:United States