Factors contributing to the changing hearing aid scene.
D003365:Costs and Cost Analysis; D005544:Forecasting; D006310:Hearing Aids / Q000191:economics / Q000706:statistics & numerical data / Q000639:trends*; D006801:Humans; D007349:Insurance, Health, Reimbursement; D007878:Legislation as Topic; D010353:Patient Education as Topic; D055656:Prescriptions; D014481:United States