1. The Department of Pediatrics and Adolescent Medicine Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
2. Copenhagen Prospective Studies on Asthma in Childhood Health Sciences University of Copenhagen Naestved Denmark
3. Department of Pediatrics Naestved Hospital Naestved Denmark
4. Centre for Medical Parasitology at Department of Clinical Microbiology Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
5. Department of Immunology and Microbiology University of Copenhagen Copenhagen Denmark