Morten J Christensen1, Carsten Bindslev-Jensen2. 1. Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis (ORCA), Odense University Hospital, University of Southern Denmark, Odense C, Denmark. Electronic address: morten.junker.christensen@rsyd.dk. 2. Department of Dermatology and Allergy Center, Odense Research Center for Anaphylaxis (ORCA), Odense University Hospital, University of Southern Denmark, Odense C, Denmark.