[1] Unversitatsklinikum Bonn, Med Klin Kardiol Pneumol & Angiol 2, Bonn, Germany
[2] LMU Klinikum, Munich, Germany
[3] LMU Munchen, Med Klin 5, Munich, Germany
[4] LMU Munchen, Comprehens Pneumol Ctr, Med Klin & Poliklin 5, LMU Klinikum, Munich, Germany
[5] Deutsch Zentrums Lungenforsch Dzl, Munich, Germany
[6] Hannover Med Sch, Klin Pneumol & Infektiol, Hannover, Germany
[7] Hannover Med Sch, Klin Pneumol, Hannover, Germany
[8] Ikf Pneumol Mainz, Mainz, Germany
[9] Univ Klinikum Heidelberg, Thoraxklin Heidelberg, Heidelberg, Germany
[10] Clin Res Ctr Resp Dis, Mainz, Germany
[11] Univ Klinikum Regensburg, Med Klin 2, Regensburg, Germany
[12] Unversitatsklinikum Bonn, Bonn, Germany
[13] Med Klin II Kardiol Pneumol & Angiol, Bonn, Germany
[14] Hannover Med Sch, Hannover, Germany
[15] Biomed Res Endstage & Obstruct Lung Dis Hannover, Hannover, Germany
[16] German Ctr Lung Res Dzl, Hannover, Germany
[17] Klin Pneumol, Hannover, Germany
[18] Uniklinikum Bonn, Med Klin Kardiol Angiol Pneumol 2, Bonn, Germany
[19] LMU Univ Hosp Munich, Dept Med 5, Munich, Germany
[20] Comprehens Pneumol Ctr Cpc M, Munich, Germany
[21] German Ctr Lung Res Dzl, Munich, Germany
[22] Med Klin V, Munich, Germany