Large-scale community echocardiographic screening reveals a major burden of undiagnosed valvular heart disease in older people: the OxVALVE Population Cohort Study - d'Arcy, JL; Coffey, S; Loudon, MA; Kennedy, A; Pearson-Stuttard, J; Birks, J; Frangou, E; Farmer, AJ; Mant, D; Wilson, J; Myerson, SG; Prendergast, BD (European Heart Journal, 2016)