Electrical Connections between Persistent Left Superior Vena Cava and Left Atrium during Catheter Ablation for Atrial Tachycardia oleh Chikaya Omichi, MD, Yoshiko Kakizawa, MD, Akiko Ishige, MD, Yasuhiro Ishii, MD, Hirotaka Nagashima, MD, Katsuo Kanmatsuse, MD, Masahiro Endo, MD, Fumio Suzuki, MD