Affiliation: | 1. Heartlands Hospital, University Hospitals Birmingham NHS Foundation Trust, Sutton Coldfield, Birmingham, UK;2. Morriston Cardiac Centre, Swansea, UK;3. City Hospital Birmingham, Sandwell and West Birmingham NHS Trust, Birmingham, UK;4. Institution Policlinico San Donato, Milan, Italy;5. Institution Sant'Ambrogio, Milan, Italy;6. Institution Clinica San Carlo, Milan, Italy |