1. Research Centre for Prevention and Health; The Capital Region of Denmark; Rigshospitalet; Glostrup Denmark
2. Department of Dermato-Allergology; The National Allergy Research Centre; Copenhagen University Hospital Gentofte; Gentofte Denmark
3. Institute of Clinical Chemistry and Laboratory Medicine; University Medicine Greifswald; Greifswald Germany
4. Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
5. Department of Clinical Experimental Research; Rigshospitalet; Glostrup Denmark