1. The National Allergy Research Centre (Videncenter for Allergi), Department of Allergy, Dermatology and Venerology, Copenhagen University Hospital Herlev‐Gentofte Gentofte Hospital Hellerup Denmark
2. Faculty of Health and Medical Sciences, Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
3. Department of Medical Informatics, Biometry and Epidemiology University of Erlangen/Nürnberg Erlangen Germany