[1] Aarhus Univ Hosp, Dept Resp Med & Allergy, Aarhus, Denmark
[2] Aarhus Univ Hosp, Dept Cardiothorac & Vasc Surg, Aarhus, Denmark
[3] Odense Univ Hosp, Dept Resp Med, Odense, Denmark
[4] Rigshosp, Dept Cardiol, Copenhagen, Denmark
[5] Odense Univ Hosp, Cardiac Thorac & Vasc Surg, Odense, Denmark