The US pluralistic health-care sector.
Ginzberg
E
E
Eisenhower Center, Conservation of Human Resources, Columbia University, New York City 10027, USA.
Ostow
M
M
D054598:Blue Cross Blue Shield Insurance Plans / Q000191:economics / Q000266:history; D003695:Delivery of Health Care / Q000191:economics / Q000266:history* / Q000639:trends; D004465:Economic Competition; D049673:History, 20th Century; D006801:Humans; D007348:Insurance, Health / Q000191:economics / Q000266:history* / Q000639:trends; D008329:Managed Care Programs / Q000191:economics / Q000266:history*; D014481:United States