[1] Uniklin RWTH Aachen, Klin Pneumol & Internist Intensivmed, Aachen, Germany
[2] Rhein Westfal TH Aachen, Dept Cardiol Pneumol Angiol & Intens Care Interna, Aachen, Germany
[3] RWTH Univ Klinikum Aachen, Klin Pneumol & Internist, Aachen, Germany
[4] Uniklin RWTH Aachen, Klin Pneumol & Internist Intens Med, Dept Cardiol Pneumol Angiol & Intens Care Interna, Aachen, Germany
[5] RWTH Univ Klinikum Aachen, Uniklin RWTH Aachen, Klin Pneumol & Internist Intens Med, Aachen, Germany
[6] Uniklin RWTH Aachen, Inst Pathol, Aachen, Germany
[7] Univ Klinikum Aachen, Dept Pneumol & Intens Care Med, Univ Hosp RWTH Aachen, Klin Pneumol & Internist Intens Med, Aachen, Germany
[8] Univ Klinikum Aachen, Med Klin 5, Klin Pneumol & Internist Intens Med, Aachen, Germany