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https://studentshare.org/health-sciences-medicine/1632873-what-is-the-authority-that-provides-the-federal-government-the-ability-to-assume-a-role-in-the-united-states-health-care-system-and-what-functions-are-provided-by-this-authority-as-the-federal-government-can-assume-a-function-in-health-care-one-role-of.