title: Authors' reply.
authors.affiliation: Department of Cardiology, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey. aksutolga@gmail.com.
authors.forename: Tolga
authors.initials: T
authors.lastname: Aksu
authors.affiliation: Department of Cardiology, Bayrampaşa Kolan Hospital, İstanbul, Turkey.
authors.forename: Kıvanç
authors.initials: K
authors.lastname: Yalın