Assessing market demand for an open HMO.
D003258:Consumer Behavior; D003657:Decision Making; D006279:Health Maintenance Organizations / Q000458:organization & administration*; D006301:Health Services Needs and Demand; D008389:Marketing of Health Services / Q000379:methods*; D008962:Models, Theoretical; D015206:Southwestern United States; D011795:Surveys and Questionnaires; D014505:Urban Population