1. Institute of Cytology of the Russian Academy of Sciences (RAS); St. Petersburg 194064 Russian Federation
2. I.P. Pavlov State Medical University; St. Petersburg 197022 Russian Federation
3. Russian Research Center of Radiology and Surgical Technology; St. Petersburg 197758 Russian Federation
4. Research Institute of Highly Pure Biopreparations; St. Petersburg 197110 Russian Federation
5. The Wharton School; University of Pennsylvania; Philadelphia Pennsylvania 19104
6. Poly-Orth International; Sharon Massachusetts 02067
7. Tufts University School of Medicine; Boston Massachusetts 02111