1 Department of Biomedical and Clinical Sciences, Allergy Center, Linköping University, Linköping, Sweden.
2 Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
3 Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden. Electronic address: maria.jenmalm@liu.se.