The arrhythmic substrate of hypertrophic cardiomyopathy using ECG imaging by Chow, J, Leong, KMW, Shun-Shin, M, Jones, S, Guttmann, OP, Mohiddin, SA, Lambiase, P, Elliott, PM, Ormerod, JOM, Koa-Wing, M, Lefroy, D, Lim, PB, Linton, NWF, Ng, FS, Qureshi, NA, Whinnett, ZI, Peters, NS, Francis, DP, Varnava, AM, Kanagaratnam, P