Treasure Tom, Pepper John, Golesworthy Tal, Mohiaddin Raad, Anderson Robert H
Clinical Operational Research Unit, Department of Mathematics, University College London, 4 Taviton Street, London WC1H 0BT, UK.
Heart. 2012 Jan;98(1):65-8. doi: 10.1136/heartjnl-2011-301017. Epub 2011 Oct 14.