Safety net providers mostly serve uninsured and publicly insured low income patients. Many of the safety net providers you read about in Chapter $4$ are in place to assist patients in accessing health care. Instead of pursuing universal coverage, would it be an equally good strategy to expand the number of safety net providers? Are there reasons for both safety net providers and health insurance to exist? How does having insurance relate to accessing care? Give me some citations or resources to find information to answer this question