1. Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
2. Harvard Medical School Center for Bioethics, Boston, Massachusetts
3. Norwegian University of Science and Technology, Trondheim, Norway
4. National Heart & Lung Institute, Imperial College London, London, United Kingdom
5. Imperial College Healthcare NHS Trust, London, United Kingdom