Anthony Dimarco1, Hatef Mansoubi2, Mark Tanner2. 1. Department of Cardiology, Western Sussex Hospitals NHS Foundation Trust, Spitalfield Lane, Chichester, PO19 6SE, UK anthony.dimarco@btinternet.com. 2. Department of Cardiology, Western Sussex Hospitals NHS Foundation Trust, Spitalfield Lane, Chichester, PO19 6SE, UK.