1. University of Antwerp - University Hospital of Antwerp, Immunology-Allergology-Rheumatology, Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
2. Department of Immunology and Allergology, Jan Palfijn Ziekenhuis Gent, Ghent, Belgium
3. Ruhr-University Bochum, IPA - Institute for Prevention and Occupational Medicine, Bochum, Germany