"In a population of children in Norway birch allergy was associated with DQB1*0603-DRB1*13 haplotype. Mugwort allergy was associated with DQB1*0609-DRB1*13 and DQB1*0501-DRB1*01 haplotypes. Asthma was not associated with DQB1; Observational study of gene-disease association. (HuGE Navigator)"xsd:string