Authors: Kjell Torén; Anna-Carin Olin; Anne Lindberg; Jenny Vikgren; Linus Schiöler; John Brandberg; Åse Johnsson; Gunnar Engström; H Lennart Persson; Magnus Sköld; Jan Hedner; Eva Lindberg; Andrei Malinovschi; Eeva Piitulainen; Per Wollmer; Annika Rosengren; Christer Janson; Anders Blomberg; Göran Bergström Journal: Int J Chron Obstruct Pulmon Dis Date: 2016-05-02