Note: having been involved in WHO's (World Health Organization) Patients for Patient Safety I had the ocassion several times to hear Don Berwick speak. Here are some notes from Trisha's blog:
Patient Empowerment Blog
By Trisha Torrey, Patient Empowerment GuidePatient Empowerment Blog
Here's an example of Dr. Berwick's point of view. From the IHI website, this is the No Needless List: