Cite

    Tomonori Watanabe et al.. “A case of bidirectional conduction block within the superior vena cava induced by cryoballoon pulmonary vein isolation.” Pacing and clinical electrophysiology, vol. 42, no. 1, 2019, pp. 107–109. http://access.bl.uk/ark:/81055/vdc_100076780719.0x000041