National health insurance: a commentary on Nathan Sinai's contributions.
D054598:Blue Cross Blue Shield Insurance Plans; D002140:California; D003669:Deductibles and Coinsurance; D049673:History, 20th Century; D007348:Insurance, Health / Q000266:history*; D007357:Insurance, Physician Services; D007883:Legislation, Medical; D006278:Medicare; D009313:National Health Programs; D009864:Ontario; D013222:State Medicine; D014481:United States