Additional references

w1 Leatherman S, Berwick D, Iles D, Lewin LS, Davidoff F, Nolan T, Bisognano M. The business case for quality: case studies and an analysis. Health Aff (Millwood) 2003;22:17-30.

w2 Ayanian JZ, Landrum MB, Guadagnoli E, Gaccione P. Specialty of ambulatory care physicians and mortality among elderly patients after myocardial infarction. N Engl J Med 2002;347:1678-86.

w3 Richardson T, Roscoe A. "PMS plus�developing a new organization and extending services." In Lewis R, Gillam S, Jenkins C, eds. Personal medical services pilots�modernising primary care? London: King�s Fund, 2001.

w4 Casalino L, Gillies RR, Shortell SM, Schmittdiel JA, Bodenheimer T, Robinson JC. External incentives, information technology, and organized processes to improve health care quality for patients with chronic diseases. JAMA 2003;289:434-41.

w5 Wagner EH, Austin BT, Davis C, Hindmarsh M, Schaefer J, Bonomi A. Improving chronic illness care: translating evidence into action. Health Aff (Millwood) 2001;20:64-78.