The Health Sciences Library (HSL) at UNC-Chapel Hill created NC Health Info to help you find reliable and easy-to-understand health and medical information and services. All the resources referenced on our page have been carefully selected by HSL librarians. However, they should be used for informational purposes only and not replace advice from medical professionals. To learn more about our Policies & Disclaimers, and ways we can help you become a more informed patient, visit our About Us section.