title: Pericardial effusion: The key point is the underlying etiology. Authors' reply.
authors.affiliation: Memorial Ankara Hospital, Department of Cardiology, Ankara, Turkey. sercanokutucu@yahoo.com.
authors.forename: Sercan
authors.initials: S
authors.lastname: Okutucu
authors.forename: Ugur Nadir
authors.initials: UN
authors.lastname: Karakulak
authors.forename: Hakan
authors.initials: H
authors.lastname: Aksoy
authors.forename: Ali
authors.initials: A
authors.lastname: Oto
mesh_terms: D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D010490:Pericardial Effusion / Q000175:diagnosis / Q000503:physiopathology*