The "value added" of not-for-profit health plans.
Nudelman
P M
PM
Group Health Cooperative of Puget Sound, Seattle, WA 98121, USA.
Andrews
L M
LM
D003695:Delivery of Health Care / Q000191:economics; D006279:Health Maintenance Organizations / Q000191:economics; D007348:Insurance, Health / Q000191:economics*; D011314:Preventive Health Services; D014481:United States