Marketing of health insurance services.
D006264:Health Benefit Plans, Employee / Q000191:economics*; D006301:Health Services Needs and Demand / Q000191:economics*; D006302:Health Services Research / Q000191:economics*; D007341:Insurance / Q000191:economics*; D007343:Insurance Carriers / Q000191:economics*; D007348:Insurance, Health / Q000191:economics*; D013781:Texas; D014495:Universities