1. Institute of Cardiovascular and Medical Sciences (M.M.Y.L., K.A.G., K.J.M.B., G.R., C.B., R.T.C., L.C., K.F.D., N.N.L., K.M., C.J.P., J.R.P., P.W., A.W., A.R., J.J.V.M., P.S.J., M.C.P., N.S., P.B.M.), University of Glasgow, UK.
2. Queen Elizabeth University Hospital, Glasgow, UK (M.M.Y.L., K.A.G., G.R., C.B., R.T.C., K.F.D., N.N.L., K.M., J.T., R.W., A.W., J.J.V.M., P.S.J., P.B.M.).
3. Glasgow Royal Infirmary, UK (M.M.Y.L., G.R., J.R.P., M.C.P., N.S.).
4. Department of Clinical Physics and Bioengineering, NHS Greater Glasgow and Clyde, UK (S.A.-S., P.H.B.).
5. Robertson Centre for Biostatistics (K.W., A.M.), University of Glasgow, UK.
6. University of Leeds, UK (B.A., S.S.).
7. University Hospital Crosshouse, Kilmarnock, UK (V.C.).
8. Golden Jubilee National Hospital, Glasgow, UK (J.G.D., M.C.P.).
9. Siemens Healthcare GmbH, Erlangen, Germany (B.K.).
10. Forth Valley Royal Hospital, Larbert, UK (C.L.).
11. University Hospital Ayr, UK (V.L.).
12. Aberdeen Royal Infirmary, UK (V.L.).
13. Royal Alexandra Hospital, Paisley, UK (C.L.M.).
14. University Hospital Monklands, Airdrie, UK (C.J.P.).
15. University of Sheffield, UK (K.S., S.S.).
16. West Glasgow Ambulatory Care Hospital, UK (I.A.S.).