[1] Odense Univ Hosp, Dept Resp Med, Klovervaenget 2, DK-5000 Odense, Denmark
[2] Univ Southern Denmark, Dept Clin Res, Odense Resp Res Unit ODIN, Odense, Denmark
[3] Southmead Hosp, North Bristol Natl Hlth Serv Trust, Resp Med Dept, Bristol, Glos, England
[4] Univ Bristol, Acad Resp Unit, Bristol, Glos, England
[5] Univ Oxford, Oxford Resp Trials Unit, Oxford, Oxon, England
[6] Univ Oxford, Nuffield Dept Med, Oxford, Oxon, England
[7] Churchill Hosp, Oxford Pleural Unit, Oxford, Oxon, England
[8] Aarhus Univ Hosp, Dept Cardiothorac & Vasc Surg, Aarhus, Denmark
[9] Aarhus Univ Hosp, Dept Clin Med, Aarhus, Denmark
[10] Odense Univ Hosp, Dept Radiol, Odense, Denmark
[11] Univ Southern Denmark, UNIFY Res & Innovat Unit Radiol, Odense, Denmark