An estimated 4 out of 5 serious medical errors involve miscommunication that occurs when care is 'handed off' from one care provider to another. Dr. Mark Chassin, president of the Joint Commission, the organization that's studied handwashing and potentially dangerous acronyms and abreviations, tells host Bruce Japsen about how the Commission's Center for Transforming Health Care and 10 hospitals and health systems across the country are working to improve patient care by improving communication between 'senders' and 'receivers.'