Cryoballoon pulmonary vein isolation as first-line treatment of typical atrial flutter: long-term outcomes of the CRAFT trial por Calvert, P, Ding, WY, Das, M, Tovmassian, L, Tayebjee, MH, Haywood, G, Martin, CA, Rajappan, K, Bates, MGD, Temple, IP, Reichlin, T, Chen, Z, Balasubramaniam, RN, Sticherling, C, Ronayne, C, Clarkson, N, Morgan, M, Barton, J, Kemp, I, Mahida, S, Gupta, D