1. Department of Dermatology and Allergy, University Hospital; Faculty of Medicine and Health Sciences, University of Oldenburg; Klinikum Oldenburg AöR Oldenburg, Germany
2. Department of Dermatology and Allergy; Hannover Medical School; Hannover Germany
3. Institute for Transfusion Medicine; Hannover Medical School; Hannover Germany
4. Division of Cellular Allergology; Research Center Borstel; Borstel Germany
5. Medway School of Pharmacy; University of Kent; Chatham Maritime UK