1 Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia.
2 Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut3Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut4Robert Wood Johnson Clinical Scholars Program, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut5Department of Health Policy and Management, School of Public Health, Yale School of Medicine, New Haven, Connecticut.