1. Life Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, Czech Republic
2. Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice (Budweis), Czech Republic
3. Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia
4. Faculty of Sciences, University of South Bohemia, České Budějovice (Budweis), Czech Republic
5. de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
6. Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov University, Moscow, Russia