1. Laboratory of Photodynamic Inactivation of Microorganisms
2. Department of Materials Science and Physics
3. University of Salzburg
4. 5020 Salzburg
5. Austria
6. Division of Animal Structure and Function
7. Department of Cell Biology
8. Department of Dermatology
9. University Hospital of Regensburg
10. Regensburg
11. Germany
12. Department of Organic Chemistry
13. University of Regensburg