1. Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
2. Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
3. Department of Analytical Chemistry, Faculty of Science, Charles University, Albertov 6, CZ-128 43 Prague 2, Czech Republic
4. Department of Health Care Disciplines and Population Protection, Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, CZ-272 01 Kladno, Czech Republic