[1] Lungenclin Grosshansdorf GmbH, Zentrum Pneumol & Thoraxchirurg, Grosshansdorf, Germany
[2] Deutsch Zentrum Lungenforsch Dzl, Airway Res Ctr North Arcn, Giessen, Germany
[3] Sahlgrens Univ Hosp, Gothenburg, Sweden
[4] Joan & Sanford I Weill Dept Med, New York, NY USA
[5] Pulm Res Inst Southeast Michigan, Farmington Hills, MI USA
[6] Pearl Astrazeneca, Durham, NC USA
[7] Astrazeneca, Cambridge, England