1. Chair and Institute of Environmental Medicine; UNIKA-T; Technical University of Munich; Augsburg Germany
2. Swiss Institute of Allergy and Asthma Research; University of Zürich; Davos Switzerland
3. Christine Kühne-Center for Allergy Research and Education (CK-CARE); Davos Switzerland
4. Children's Hospital of Eastern Switzerland; St. Gallen Switzerland
5. Allergy Unit; Department of Dermatology; University Hospital of Zürich; Zürich Switzerland
6. Department of Dermatology and Allergy; University of Bonn; Bonn Germany
7. Hochgebirgsklinik Davos; Davos-Wolfgang Switzerland