220Simultaneous multi-catheter cryotherapy for the treatment of accessory pathways refractory to radiofrequency catheter ablation. (19th March 2018) - Leung, L; Evranos, B; Gonna, H; Gomes, J; Harding, I; Raju, H; Angelozzi, A; Domenichini, G; Zuberi, Z; Norman, M; Gallagher, M