Fifteen years after To Err is Human: a success story to learn from.

Armstrong Institute for Patient Safety and Quality, Johns Hopkins Medicine; Anesthesiology and Critical Care Medicine, Surgery, and Health Policy and Management, Johns Hopkins University, Baltimore, Maryland, USA Agency for Healthcare Research and Quality, Center for Quality Improvement and Patient Safety, Rockville, Maryland, USA U.S. Department of Health and Human Services, Office of Disease Prevention and Health Promotion, Rockville, Maryland, USA Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA