From the Cardiothoracic Unit (A.F., V.T., C.B., L.C., S.K., G.D., C.v.D., P.B., A.M.T.), Great Ormond Street Hospital for Children, London, UK; the Centre for Cardiovascular MR (A.F., A.M.T.), UCL Institute of Child Health, London, UK; Policlinico San Donato Milanese (A.F.), IRCCS, Milano, Italy; and The Heart Hospital (V.T., B.M., F.W., C.v.D., P.B.), UCLH, London, UK. (At 2008-09-30)
