1. Department of Dermatology, Zealand University Hospital, Health Sciences Faculty, University of Copenhagen, Roskilde, Denmark
2. Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
3. Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark
4. Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
5. Danish Genome Institute, Aarhus, Denmark