title: Authors’ reply.
authors.forename: Ingrid L
authors.initials: IL
authors.lastname: Titlestad
authors.forename: Annmarie T
authors.initials: AT
authors.lastname: Lassen
authors.forename: Jørgen
authors.initials: J
authors.lastname: Vestbo
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D063087:Noninvasive Ventilation; D029424:Pulmonary Disease, Chronic Obstructive; D012131:Respiratory Insufficiency; D017741:Survivors / Q000706:statistics & numerical data*