title: Erratum to: Is aclidinium alone or combined with a LABA a rational choice for symptomatic COPD patients?
authors.affiliation: Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Cardio-thoracic unit and Cystic Fibrosis Adult Center Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico Milano, Milan, Italy. francesco.blasi@unimi.it.
authors.forename: F
authors.initials: F
authors.lastname: Blasi
authors.affiliation: Department of Biomedical Science, Personalized Medicine Clinic: Asthma & Allergy - Humanitas Clinical and Research Center, Humanitas University - Rozzano (Milano), Milan, Italy.
authors.forename: G W
authors.initials: GW
authors.lastname: Canonica
authors.affiliation: Pneumology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Miravitlles