1. Department of Dermato-Allergology; Gentofte Hospital; University of Copenhagen; 2900-Hellerup Denmark
2. Department of Clinical Biochemistry; Gentofte Hospital; University of Copenhagen; Hellerup Denmark
3. Department of Pathology; Herlev Hospital; University of Copenhagen; Herlev Denmark
4. National Allergy Research Centre; Gentofte Hospital; University of Copenhagen; Hellerup Denmark