Master patient index helps preserve order.
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D005568:Forms and Records Control; D017143:Fuzzy Logic; D020408:Health Insurance Portability and Accountability Act; D008498:Medical Record Linkage; D016347:Medical Records Systems, Computerized / Q000458:organization & administration*; D010355:Patient Identification Systems / Q000458:organization & administration*; D018511:Systems Integration; D014481:United States