Medical Management of Vulnerable and Underserved Patients: Principles, Practice, Populations by 
Harrison's Principles of Internal Medicine, (Vol. 1 & Vol. 2) by The Office of Community Health Systems (CHS) works to maintain and strengthen Washington State's health systems.
Health System Quality Assurance's top priority is to protect and improve the health of people in Washington State. They do this by helping to prevent injuries, develop health systems and improve patient safety.