American medicine: the subject is change.
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D000574:American Medical Association; D001291:Attitude of Health Personnel; D006296:Health Services / Q000639:trends; D006761:Hospitals / Q000639:trends; D006801:Humans; D007351:Insurance, Liability / Q000639:trends; D008511:Medicine; D012577:Schools, Medical / Q000639:trends; D014481:United States