1. Vectorology and Gene Transfer, UMR 8121 CNRS, Institute Gustave Roussy, F-94805 Villejuif, France.
2. Department of Biology, Vytautas Magnus University, LT-44404 Kaunas, Lithuania.
3. U 266 INSERM-FRE 2463 CNRS, Faculté de Pharmacie, Université Paris 5, F-75270 Paris, France.
4. Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia.