Health care systems in the United States and the United Kingdom: a lifetime of change -- Turbulence in the two systems -- Measuring and rewarding performance: imposing change from above in the United Kingdom -- Regulating the frontline from above: the joint commission and hospital regulation in the United States -- Pushing back from the frontline: staff responses to privatization in the National Health Service -- Building a safety culture from the frontline in the United States -- From the health care workplace to the health care system: learning from the United States and United Kingdom.