Abstract
The opportunity to improve health care using existing scientific knowledge is immense. Much is known that is not being used in routine care, leading to a large gap between knowledge and practice. Collaborative improvement models bring health care professionals together to focus on this gap and to accelerate the pace of improvement in their organizations. This article describes one such model, the Institute for Healthcare Improvement's Breakthrough Series Collaborative model. Lessons are drawn to help inform future collaborative efforts that focus on the improvement of care.