Drury-Smith Mark, Horton Richard, Khogali Saib
Heart & Lung Centre, New Cross Hospital, University of Birmingham, Royal Wolverhampton NHS Trust, Wolverhampton WV10 0QP, UK.
Postgrad Med J. 2012 Sep;88(1043):553-4. doi: 10.1136/postgradmedj-2012-130775. Epub 2012 May 30.