1 Division of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA. Electronic address: [email protected].
2 LungenClinic Grosshansdorf (member of the German Center for Lung Research [DZL]), Airway Research Center North (ARCN), Grosshansdorf, Germany; Christian-Albrechts University, DZL, ARCN, Kiel, Germany.
3 Medicines Evaluation Unit, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK.
4 King's Centre for Lung Health, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.
5 Department of Medicine, Pulmonary and Critical Care Medicine, University of Marburg, DZL, Marburg, Germany.