1 Division of ENT Diseases, CLINTEC, Karolinska Institutet, Stockholm, Sweden;
2 Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; and Institute for Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
3 Division of ENT Diseases, CLINTEC, Karolinska Institutet, Stockholm, Sweden; Centre for Allergy Research, Karolinska Institutet, Stockholm, Sweden; and.
4 Division of ENT Diseases, CLINTEC, Karolinska Institutet, Stockholm, Sweden; Department of ENT Disease, Karolinska University Hospital, Stockholm, Sweden; lars-olaf.cardell@ki.se.