1. Department of Internal Medicine V—Pneumology, Allergology and Respiratory Intensive Care Medicine, Saarland University Hospital, 66421 Homburg, Germany
2. Infection and Immunity Group, Department of Child Health, School of Medicine, University of Cardiff, University Hospital of Wales, Heath Park, Cardiff CF14 4XN, UK
3. School of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland
4. Department of Dermatology and Allergology, University of Bonn, 53012 Bonn, Germany
5. Institute for Medical Microbiology, Immunology and Hygiene, Technical University of Munich, 80333 Munich, Germany
6. Institute of Molecular Medicine, Trinity Centre for Health Sciences, St. James' Hospital, Dublin 8, Ireland