From the Vascular Physiology Unit (L.G., A.E.D., M.J.M., G. Oakley, M.T., G. O’Connor, N.K., J.E.D.), Great Ormond Street Hospital for Children NHS Trust, the Department of Psychology (M.C., A.S.), St Georges Hospital, and the Department of Medicine (J.B.), Middlesex Hospital, London, UK.(2000-11-14時点)