1. Department of Dermatology, Bispebjerg University Hospital University of Copenhagen Copenhagen NV 2400 Denmark
2. Wellman Center for Photomedicine Massachusetts General Hospital Boston Massachusetts 02114 USA
3. Department of Pharmacy University of Copenhagen Copenhagen NV 2100 Denmark
4. Department of Pathology, Rigshospitalet University of Copenhagen Copenhagen NV 2100 Denmark
5. Department of Plant and Environmental Sciences (PLEN) University of Copenhagen Frederiksberg 1871 Denmark