[1] Univ Penn, Dept Phys, Perelman Sch Med, Philadelphia, PA 19104 USA
[2] Inst Curie, F-91405 Orsay, France
[3] RAS, Ctr Theoret Problems Physicochem Pharmacol, Moscow 117901, Russia
[4] Univ Porto, Inst Biol Mol & Celular, Chromosome Instabil Dynam Lab, P-4100 Oporto, Portugal
[5] Univ Porto, Fac Med, Dept Expt Biol, Cell Div Unit, P-4100 Oporto, Portugal