title: Authors' reply.
authors.affiliation: Pulmonary Medicine Department, Università Cattolica del Sacro Cuore, Rome, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Smargiassi
authors.forename: Riccardo
authors.initials: R
authors.lastname: Inchingolo
authors.forename: Francesco
authors.initials: F
authors.lastname: Faita
authors.forename: Linda
authors.initials: L
authors.lastname: Tagliaboschi
authors.forename: Alessandro
authors.initials: A
authors.lastname: Di Marco Berardino
authors.forename: Salvatore
authors.initials: S
authors.lastname: Valente
authors.forename: Giuseppe Maria
authors.initials: GM
authors.lastname: Corbo
mesh_terms: D001823:Body Composition; D003964:Diaphragm / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000000981:diagnostic imaging*; D014463:Ultrasonography