For citations:

Davtyan K.V., Topchyan A.Н., Kalemberg A.A., Simonyan G.Yu. Predictors of sustained isolation of pulmonary vein ostia with cryoballoon ablation using a second-generation cryoballoon Arctic Front Advance. Russian Journal of Cardiology. 2019;(7):33-39. (In Russ.) https://doi.org/10.15829/1560-4071-2019-7-33-39