Left Hemothorax During Pulmonary Vein Isolation.

Competing Interests: Funding Support and Author Disclosures The Section of Arrhythmia is supported by an endowment from Abbott Japan, Boston Scientific Japan, and Medtronic Japan. Dr Hirata chairs the section, and Drs Fukuzawa and Imamura belong to the section. Dr Fukuzawa has received a scholarship donation from Biotronik Japan. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose.