1. Department of Animal Anatomy, Institute of Veterinary Science, University of Agriculture in Krakow, Krakow, Poland
2. Department of Comparative Anatomy, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
3. Department of Malacology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
4. Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia