Spence Mark S, Balaratnam Michelle S, Gatzoulis Michael A
Adult Congenital Heart Centre and Centre for Pulmonary Hypertension, Royal Brompton Hospital, and the National Heart & Lung Institute, Imperial College, London SW3 6NP, UK.
Lancet. 2007 Nov 3;370(9598):1530-2. doi: 10.1016/S0140-6736(07)61647-X.