1. Vrije Universiteit Brussel (VUB), Skin Immunology & Immune Tolerance (SKIN) Research Group, Brussels, Belgium.
2. Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Dermatology, Brussels, Belgium.
3. Department of Dermatology and Allergy, Ludwig-Maximilian-University, Munich, Germany.
4. Department of Dermatology and Allergy, University Hospital Augsburg, Augsburg, Germany.