1. From the Department of Cardiology, Castle Hill Hospital, Kingston-upon-Hull, United Kingdom (A.L., M.S.C., J.R., A.N.M., A.A., R.M.O., S.T., F.A., A.H.); Department of Academic Cardiology, Hull York Medical School, Kingston-upon-Hull, United Kingdom (A.L., A.H.); and Imperial College London, London, United Kingdom (S.S.N., J.E.D.).