(Retraction Request) Electrophysiological Characteristics and Radiofrequency Catheter Ablation Treatment of Idiopathic Ventricular Arrhythmias Successfully Ablated From the Ostium of the Coronary Sinus

Dear Editor in Chief,

Circulation Journal

We are writing you today to have to inform that we wish to retract our paper published in your journal (Yoshiaki Yui, MD; Yukio Sekiguchi, MD; Akihiko Nogami, MD; Hiro Yamasaki MD; Takeshi Machino, MD; Kenji Kuroki, MD; Miyako Igarashi, MD; Kazutaka Aonuma, MD. “Electrophysiological Characteristics and Radiofrequency Catheter Ablation Treatment of Idiopathic Ventricular Arrhythmias Successfully Ablated From the Ostium of the Coronary Sinus”. Circ J 2017; 81(12): 1807–1815. doi:10.1253/circj.CJ-16-1263).

We apologize that we secured Institutional Review Board approval for this study after publication of the article in the journal. This request of retraction was agreed by all authors of this paper. We are very sorry for your inconvenience.

• Yoshiaki Yui, MD
• Cardiovascular Division, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan