[1] Univ Hosp, Translat Lung Res Ctr Heidelberg TLRC H, Dept Pneumol & Crit Care, Thoraxklin, Heidelberg, Germany
[2] German Ctr Lung Res DZL, Heidelberg, Germany
[3] Univ Hosp, Dept Diagnost & Intervent Radiol Nucl Med, Thoraxklin, Heidelberg, Germany
[4] Asklepios Klin Barmbek, Weaning Ctr, Dept Pneumol & Internal Intens Care Med, Hamburg, Germany
[5] Univ Freiburg, Univ Med Ctr Freiburg, Dept Pneumol, Freiburg, Germany
[6] Univ Hosp, Translat Lung Res Ctr Heidelberg TLRC H, Dept Diagnost & Intervent Radiol, Heidelberg, Germany