1. Department of Dermatology and Allergy, Herlev and Gentofte Hospital University of Copenhagen Hellerup Denmark
2. Ilisimatusarfik University of Greenland Nuuk Greenland
3. Copenhagen Research Group for Inflammatory Skin (CORGIS) Hellerup Denmark
4. Department of Bacteria, Parasites and Fungi Statens Serum Institut Copenhagen Denmark
5. Department of Infectious Disease Epidemiology and Prevention Statens Serum Institut Copenhagen Denmark
6. Department of Infectious Diseases Rigshospitalet University Hospital Copenhagen Denmark
7. Department of Public and Occupational Health, Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
8. Faculty of Medicine University Zurich Zurich Switzerland
9. Department of Dermatology University Hospital Zurich Zurich Switzerland
10. Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
11. Laboratory for Analytical Chemistry, Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology University of Zagreb Zagreb Croatia
12. Department of Dermatology, Bispebjerg Hospital University of Copenhagen Copenhagen Denmark