Three key attributes of a sustainable health system

The author of the assigned article, “Shattuck Lecture: A Successful and Sustainable Health System — How to Get There From Here”

(https://lopes.idm.oclc.org/login?url=https://search-proquest-com.lopes.idm.oclc.org/docview/929159711?accountid=7374) maintains that a sustainable health system has three key attributes. What are these three key attributes and what recommendations are offered to ensure efficiency, sustainability, and optimal functioning?