1. Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000 Ljubljana, Slovenia
2. Department of Surface Engineering and Optoelectronics, Institut Jožef Stefan, Teslova ulica 30, 1000 Ljubljana, Slovenia
3. Institute of Microbiology and Immunology, Medical Faculty, University of Ljubljana, Zaloška 4, 1000 Ljubljana, Slovenia