A prospective study of ripple mapping in atrial tachycardias: a novel approach to interpreting activation in low-voltage areas - Luther, V; Linton, NW; Koa-Wing, M; Lim, PB; Jamil-Copley, S; Qureshi, N; Ng, FS; Hayat, S; Whinnett, Z; Davies, DW; Peters, NS; Kanagaratnam, P (Circulation: Arrhythmia and Electrophysiology, 2016)