A tale of two systems: the changing academic health center.

Major changes in academic health centers (AHCs) may not be confined to the United States. Both Partners HealthCare System in Boston and University College London School of Medicine/University College Hospital Trust in London have recently undergone mergers, downsizing, and cost cutting on unprecedented scales. A comparison of the recent histories of these eminent AHCs reveals striking similarities in the clinical and academic pressures bearing down upon them and in their responses. It also reveals important differences in their situations and actions, traceable in large part to the contrasting roles of governments and markets in the health care economies of these two countries.