1. Laboratory of Organic Chemistry, Department of Chemistry; University of Athens; Athens Greece
2. Institute of Cancer Research, Department of Radiation Biology; The Norwegian Radium Hospital; Oslo University Hospital; Oslo Norway
3. Laboratory of Cellular Immunology; Department of Microbiology; Hellenic Pasteur Institute; Athens Greece
4. Division of Physical Chemistry; Institute of Nanoscience and Nanotechnology; NCSR Demokritos; Aghia Paraskevi Greece