Affiliation: | 1. Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark;3. Abdominal Centre K, Medical Section, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark;4. Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark;6. Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark |