1. Respiratory Department; Hospital de la Santa Creu i Sant Pau; Universitat Autonoma de Barcelona; Barcelona Spain
2. Biomedical Research Institute Sant Pau (IIB Sant Pau); Hospital de la Santa Creu i Sant Pau; Universitat Autonoma de Barcelona; Barcelona Spain
3. Tayside Respiratory Research Group; University of Dundee; Dundee UK
4. Laboratory of Experimental Immunology; Hospital de la Santa Creu i Sant Pau; Universitat Autonoma de Barcelona; Barcelona Spain
5. Microbiology Department; Hospital de la Santa Creu i Sant Pau; Universitat Autonoma de Barcelona; Barcelona Spain
6. Critical Care Department; South Texas Veterans Health Care System
7. Medicine Division; University of Texas Health Science Center at San Antonio; San Antonio TX USA