1. British Heart Foundation Glasgow Cardiovascular Research Centre, 126 University Place, University of Glasgow , Glasgow, G128TA , UK
2. Golden Jubilee National Hospital , Agamemnon Street, Clydebank, G81 4DY , UK
3. Cardiovascular Division, Department of Medicine, University of Virginia Health System , 1215 Lee St., Box 800158, Charlottesville, VA 22908 , USA
4. Department of Radiology and Medical Imaging, University of Virginia Health System , 1215 Lee St., Box 800170, Charlottesville, VA 22908 , USA
5. Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University , 4th Floor William Leech Building, Newcastle upon Tyne NE2 4HH , UK
6. Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust , Newcastle upon Tyne , UK
7. Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School , Boston, MA , USA