RT Journal Article SR Electronic T1 The second year has been completed JF Breathe JO Breathe FD European Respiratory Society SP 75 OP 76 DO 10.1183/20734735.000315 VO 11 IS 1 A1 Anders Bjerg A1 Anne Olland A1 Daan Caudri A1 Szymon SkoczyƄski YR 2015 UL http://breathe.ersjournals.com/content/11/1/75.abstract AB