Slovak republic:

Faculty of Science, Comenius University in Bratislava

Faculty of Metallurgy, Technical University of Košice

Faculty of Medicine, Pavol Jozef Safarik University in Košice


Outland:

Faculty of Science, Masaryk University, Brno, Czech republic

Faculty of Science, University of Western Ontario, London, Canada

Max Planck Institut für Biogeochemie, Jena, Germany

Department of Organismic and Evolutionary Biology, Harvard University, United States of America

Sukachev's Laboratory of the Institute of Evolution and Ecology Problems, Russian Academy of Sciences, Moscow, Russia

Department of Biology, University of Oulu, Finland

Polish Academy of Science, Institute of Ecology, Lublin, Poland

Szent István University, Gödöllő, Hungary

Universita di Siena, Siena, Italy

Universita di Parma, Parma, Italy