title: Providers confront challenges in HMO contracting.
mesh_terms: D003284:Contract Services; D019033:Delivery of Health Care, Integrated / Q000191:economics*; D006279:Health Maintenance Organizations / Q000191:economics* / Q000458:organization & administration; D017146:Models, Organizational; D020414:Risk Sharing, Financial; D014589:Utah; D014768:Virginia