Institution: | a Research Centre for Prevention and Health, Glostrup University Hospital, the Capital Region of Denmark, Glostrup, Denmark b Danish Research Centre for Chemical Sensitivities, Department of Dermato-Allergology, Gentofte University Hospital, University of Copenhagen, Copenhagen, Denmark c National Allergy Research Centre, Department of Dermato-Allergology, Gentofte University Hospital, University of Copenhagen, Copenhagen, Denmark d COPSAC, Danish Paediatric Asthma Centre, Department of Paediatrics, Gentofte University Hospital, University of Copenhagen, Copenhagen, Denmark e Department of Clinical Biochemistry, Gentofte University Hospital, University of Copenhagen, Copenhagen, Denmark |