title: Focal atrial fibrillation: A four-headed Lernaean hydra?
authors.forename: Etienne
authors.initials: E
authors.lastname: Delacretaz
mesh_terms: D001281:Atrial Fibrillation / Q000209:etiology / Q000601:surgery; D017115:Catheter Ablation; D004594:Electrophysiology; D006801:Humans; D011667:Pulmonary Veins / Q000503:physiopathology* / Q000601:surgery