Competition in health insurance markets.
D004465:Economic Competition / Q000331:legislation & jurisprudence*; D004467:Economics / Q000331:legislation & jurisprudence*; D007348:Insurance, Health / Q000331:legislation & jurisprudence*; D008389:Marketing of Health Services / Q000331:legislation & jurisprudence; D008962:Models, Theoretical; D014481:United States; D014485:United States Federal Trade Commission