Affiliation: | 1.Department of Occupational Medicine, First Faculty of Medicine,Charles University and General University Hospital in Prague,Prague 2,Czech Republic;2.J. Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences,Prague 8,Czech Republic;3.3rd Medical Department, First Faculty of Medicine,Charles University and General University Hospital in Prague,Prague 2,Czech Republic;4.First Faculty of Medicine,Biocev, Charles University,Vestec,Czech Republic |