Cryoballoon ablation of the left atrial posterior wall reduces recurrence of persistent atrial fibrillation in patients with non‐paroxysmal atrial fibrillation oleh Takatoshi Shigeta, Yasuteru Yamauchi, Yuichiro Sagawa, Atsuhito Oda, Shinichi Tachibana, Koji Sudo, Rena Nakamura, Kaoru Okishige, Masahiko Goya, Tetsuo Sasano