1. Vrije Universiteit Brussel (VUB); Universitair Ziekenhuis Brussel (UZ Brussel); Department of Dermatology; Brussels Belgium
2. Department of Dermatology and Allergology; Medical School; RWTH Aachen University; Aachen Germany
3. Institute of Biochemistry and Molecular Biology; Medical School; RWTH Aachen University; Aachen Germany