Opening access. HMOs' new tack leaves question, 'Where's the managed care?'.
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D006279:Health Maintenance Organizations / Q000331:legislation & jurisprudence / Q000458:organization & administration* / Q000706:statistics & numerical data; D006297:Health Services Accessibility / Q000331:legislation & jurisprudence; D008511:Medicine; D012017:Referral and Consultation / Q000331:legislation & jurisprudence* / Q000706:statistics & numerical data; D013038:Specialization; D014481:United States