1. Keele Cardiovascular Research Group, Keele University, and Department of Cardiology, Royal Stoke Hospital, University Hospital North Midlands, Stokeon-Trent, United Kingdom (M.A.M., C.S.K., J.N.).
2. DRG Abacus, Bicester, Oxfordshire, United Kingdom (J.T., N.H., G.B., E.B.).
3. Health eResearch Centre, Farr Institute for Health Informatics Research and Faculty of Medical and Human Sciences, University of Manchester, United Kingdom (W.H., E.K.).
4. Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom (P.L.).
5. Department of Cardiology, The James Cook University Hospital, Middlesbrough, United Kingdom (M.d.B.).
6. Terumo Europe N.V. Leuven, Belgium (N.V.).
7. Department of Cardiology, University Hospital of Wales, Cardiff, United Kingdom (T.K.).
8. Department of Cardiology, University Hospital Southampton and Faculty of Medicine, University of Southampton, United Kingdom (N.C.).