1. a Department of Environmental Chemistry and Ecotoxicology , University of Gdańsk , Gdańsk , Poland
2. b National Institute of Advanced Industrial Science and Technology, Environmental Measurement Group , Tsukuba , Ibaraki , Japan
3. c Department of Biochemistry , Warmia and Mazury University , Olsztyn , Poland
4. d Wadsworth Center, New York State Department of Health and Department of Environmental Health Sciences, School of Public Health , State University of New York at Albany , Albany , New York , USA