title: Reply to the Letter to the Editor by Sollini M et al.
authors.affiliation: University of Siena, Siena, Italy. pacini8@unisi.it.
authors.forename: F
authors.initials: F
authors.lastname: Pacini
authors.affiliation: University of Pisa, Pisa, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Elisei
authors.affiliation: University of Milan, Milan, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Fugazzola
authors.affiliation: University of Verona, Verona, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Ferdeghini
authors.affiliation: University of Cagliari, Cagliari, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Mariotti
authors.affiliation: University of Catania, Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Pellegriti