MYOCARDIAL PERFUSION, STRAIN AND PRE-CONTRAST T1 VALUES IN MODERATE ASYMPTOMATIC AORTIC STENOSIS - Bull, S; Loudon, M; Joseph, J; Francis, J; Ferreira, V; Piechnik, S; Karamitsos, T; Stoll, V; Lewis, A; Prendergast, B; Neubauer, S; Myerson, S (2013)