1. Department of Nuclear Medicine; University Hospital Aachen; RWTH Aachen University; 30 Pauwelsstrasse Aachen 52074 Germany
2. Department of Dermatology and Allergology; University Hospital RWTH Aachen; 30 Pauwelsstrasse Aachen 52074 Germany
3. Department of Nuclear Medicine; Maastricht University Medical Center; Maastricht the Netherlands