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2. Historical study of leadership theories;Journal of Strategic Human Resource Management,2012
3. Shared leadership in teams: an investigation of antecedent conditions and performance;The Academy of Management Journal,2007
4. Centers for Medicare and Medicaid Services (CMS) (2018a), “Accountable care organizations. What is an ACO?”, available at: www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/ACO/