1. Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
2. Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, Prague 4 142 20, Czech Republic
3. Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague 4 142 21, Czech Republic
4. Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University, Salmovská 1, Prague 2 120 00, Czech Republic
5. Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8 182 21, Czech Republic