Should rates of cataract surgery vary by insurance status?
Obstbaum
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D002387:Cataract Extraction / Q000191:economics / Q000706:statistics & numerical data*; D018588:Fee-for-Service Plans; D006279:Health Maintenance Organizations; D006302:Health Services Research; D006801:Humans; D007193:Independent Practice Associations; D017061:Prepaid Health Plans; D014481:United States