1. Department of Odontology; Oral Pathology and Oral Medicine; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen N Denmark
2. National Allergy Research Centre; Department of Dermatology and Allergy; Gentofte University Hospital; Hellerup Denmark
3. Department of Dermatology and Allergy; Gentofte University Hospital; Hellerup Denmark
4. Department of Odontology; Faculty of Health and Medical Sciences; Community Dentistry; University of Copenhagen; Copenhagen N Denmark