1. Department of Physical and Macromolecular Chemistry Faculty of Science Charles University Hlavova 2030 128 43 Prague 2 Czech Republic
2. Institute of Macromolecular Chemistry, v.v.i. Academy of Sciences of the Czech Republic Heyrovský Sq. 2 16206 Prague 6 Czech Republic
3. NMR laboratory Faculty of Science Charles University in Prague Hlavova 2030 128 43 Prague 2 Czech Republic
4. Institute of Biology and Medical Genetics First Faculty of Medicine Charles University and General University Hospital in Prague Purkynie Ustav, Albertov 4 12 801 Prague Czech Republic