1. Department of Dermatology and Allergology; Ludwig-Maximilian University; Munich Germany
2. Department of Allergology; University of Groningen; University Medical Center Groningen; RB Groningen the Netherlands
3. GRIAC research institute; University of Groningen; University Medical Center Groningen; AV Groningen the Netherlands
4. Statistical Consulting Unit; Department of Statistics; Ludwig-Maximilian University; Munich Germany
5. Fakultät für Gesundheit der Universität Witten/Herdecke; Witten Germany
6. Department of Pathology; Ludwig-Maximilian University; Munich Germany
7. Department of Psychiatry and Psychotherapy; Ludwig-Maximilian University; Munich Germany