1. National Cell Bank, Pasteur Institute of Iran, Tehran, Iran
2. Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
3. School of Chemistry and Chemical Biology & Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
4. Department of Physics, Sharif University of Technology, Tehran, Iran
5. School of Pharmacy, UEA, Norwich Research Park, Norwich,U.K.
6. Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Avenue Maistriau 19, B-7000 Mons, Belgium