[1] Thoraxklin Heidelberg GmbH, Heidelberg, Germany
[2] German Ctr Lung Res DZL, Fraunhofer Inst Toxicol & Expt Med, Hannover, Germany
[3] CIMS Studienzentrum Bamberg GmbH, Bamberg, Germany
[4] Boehringer Ingelheim Int GmbH, Ingelheim, Germany
[5] Boehringer Ingelheim Pharmaceut Inc, Ridgefield, CT USA
[6] Johannes Gutenberg Univ Mainz, Dept Radiol, Mainz, Germany
[7] Philipps Univ Marburg, Dept Med Pulm & Crit Care Med, Univ Med Ctr Giessen & Marburg, German Ctr Lung Res DZL, Marburg, Germany
[8] Hannover Med Sch, Diagnost & Intervent Radiol, Hannover, Germany
[9] LungenClin Grosshansdorf, Pulm Res Inst, Grosshansdorf, Germany