1. Accountable care in the safety net: a case study of the Cambridge Health Alliance Author(s): Hacker, Karen, authorMechanic, Robert, authorSantos, Palmira, author Publication: [New York, N.Y.] : Commonwealth Fund, June 2014 Subject(s): Accountable Care OrganizationsSafety-net Providers -- economicsHealth Care ReformModels, EconomicOrganizational Case StudiesPatient-Centered CareQuality ImprovementHumansMassachusettsUnited States