1 Montefiore Einstein Center for Heart & Vascular Care, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA.
2 Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
3 Heart & Vascular Centre, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
4 The Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
5 Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
6 Programme for Advanced Coronary Diseases, Division of Cardiovascular Medicine, Duke Heart Center, Ambulatory Care, Durham, North Carolina, USA.
7 Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
8 Department of Medicine/Cardiology, Duke University School of Medicine, Durham, North Carolina, USA.