1. Department of Chemistry, University of Patras, GR-26504 Patras, Greece
2. Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
3. Department
of Medical Physics, University Hospital of Larissa, University of Thessaly, Biopolis, GR-41110 Larisa, Greece
4. Department of Radiology, University Hospital of Larissa, University of Thessaly, Biopolis, GR-41110 Larisa, Greece
5. FORTH/ICE-HT, Stadiou Street, P.O. Box 1414, GR-26504 Rio-Patras, Greece