1. Centre for Neural and Adaptive Systems, School of Computing, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK
2. Center for Systems Science, Arizona State University, Tempe, AZ 85287-7606, USA
3. Institute of Mathematical Problems in Biology, Russian Academy of Sciences, Pushchino, 142290, Russia
4. Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290, Russia