title: Reply.
authors.affiliation: Department of Cardiology, University of Ferrara, S. Anna Hospital, Via Aldo Moro 8, 44124 Cona Ferrara, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Bertini
authors.affiliation: Department of Cardiology, University of Ferrara, S. Anna Hospital, Via Aldo Moro 8, 44124 Cona Ferrara, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Malagù
authors.affiliation: Department of Cardiology, University of Ferrara, S. Anna Hospital, Via Aldo Moro 8, 44124 Cona Ferrara, Italy.
authors.forename: Donato
authors.initials: D
authors.lastname: Mele