RT Book, Whole SR Electronic A2 Kolb, Martin A2 Vogelmeier, Claus F. T1 Outcomes in Clinical Trials YR 2013 SN 978-1-84984-045-3 DO 10.1183/1025448x.erm6213 OP 205 UL https://books.ersjournals.com/content/9781849840453/9781849840453