title: Effects of adding salmeterol/fluticasone propionate to tiotropium on airway dimensions in patients with chronic obstructive pulmonary disease.
authors.affiliation: Department of Respiratory Medicine, Atami Hospital, International University of Health and Welfare, Atami, Japan. hoshino@iuhw.ac.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Hoshino
authors.forename: Junichi
authors.initials: J
authors.lastname: Ohtawa