Potentially Avoidable Hospitalizations for COPD and Pneumonia: The Role of Physician and Practice Characteristics.

Ann S. O'Malley, MD, MPH; Hoangmai H. Pham, MD, MPH; Deborah Schrag, MD, MPH; Beny Wu, MS; Peter B. Bach, MD, MAPP
Medical Care. 45(6):562-570, June 2007.
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