Graham Ian M, Cooney Marie-Therese, Dudina Alexandra, Squarta Sophie
Trinity College and Department of Cardiology, The Adelaide and Meath Hospital Incorporating National Childrens' Hospital Tallaght, Dublin, Ireland.
Eur J Cardiovasc Prev Rehabil. 2009 Aug;16 Suppl 2:S2-7. doi: 10.1097/01.hjr.0000359226.50399.59.