1. Department of Biochemistry, Comenius University, Faculty of Natural Sciences, Mlynska dolina CH-1, 842 15 Bratislava, Slovak Republic
2. Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Kozep fasor 52, H-6726 Szeged, Hungary
3. Department of Genetics, Comenius University, Faculty of Natural Sciences, Mlynska dolina B-1, 842 15 Bratislava, Slovak Republic