[1] Univ Med Ctr Hamburg Eppendorf, Dept Resp Med, Ctr Oncol, Hamburg, Germany
[2] Univ Texas Southwestern Med Ctr Dallas, Dallas, TX 75390 USA
[3] Ernst Moritz Arndt Univ Greifswald, Dept Resp Med, Clin Internal Med, Greifswald, Germany
[4] UGMLC, Internal Med, Giessen, Germany
[5] Cleveland Clin, Dept Pulm Allergy & Crit Care Med, Resp Inst, Cleveland, OH 44106 USA
[6] Univ Calif San Diego, Dept Pulm Crit Care, San Diego, CA 92103 USA
[7] Univ Leipzig, Dept Resp Med, Leipzig, Germany
[8] Actel Pharmaceut Ltd, Clin Pharmacol, Allschwil, Switzerland
[9] Actel Pharmaceut Ltd, Biostat, Allschwil, Switzerland
[10] Actel Pharmaceut Ltd, Clin Sci, Allschwil, Switzerland
[11] Tufts Univ, Sch Med, Tufts Med Ctr, Pulm Crit Care & Sleep Div, Boston, MA 02111 USA