1. Department of Respiratory Disease; University Hospital of Gasthuisberg; Leuven Belgium
2. Rega Institute for Medical Research; Department of Microbiology and Immunology; University of Leuven; Leuven Belgium
3. Department of Radiology; University Hospital of Gasthuisberg; Leuven Belgium
4. Translational Research Center for Gastrointestinal Disorders; University of Leuven; Leuven Belgium
5. Laboratory of Clinical Immunology; Catholic University of Leuven; Leuven Belgium