HMOs try new tactics to stand out in the marketplace.
D000529:Complementary Therapies; D003625:Data Collection; D004465:Economic Competition; D006279:Health Maintenance Organizations / Q000458:organization & administration* / Q000639:trends; D007342:Insurance Benefits / Q000706:statistics & numerical data*; D008389:Marketing of Health Services / Q000639:trends*; D017008:Negotiating; D014481:United States