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Updated: Jan 19, 2026

Phase Transitions and Effect of Intermolecular Forces
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Phase Transitions and Effect of Intermolecular Forces

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The United States Health System in Transition

John E McDonough1

  • 1Department of Health Policy & Management; Harvard School of Public Health ; Boston , MA USA.

Health Systems and Reform
|September 15, 2019
PubMed
Summary

The Affordable Care Act (ACA) represents a major US health reform, expanding insurance access and shifting payment models. While implementation continues, the law is becoming permanent, offering insights for global healthcare systems.

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