Retrospective Observational Study of the Carbon Dioxide Insufflation Technique for Epicardial Access Ablation of Refractory Arrhythmias. - Figueiredo, Margarida G.; Valente, Bruno; Magalhães, Leonor; Portugal, Guilherme; Santos, Hélder; Lousinha, Ana; Cunha, Pedro Silva; Ferreira, Rui Cruz; Oliveira, Mário Martins (Journal of Clinical Medicine, 2025)