1. MTA-ELTE Comparative Ethology Research Group, Eötvös Loránd University, H-1117 Budapest, Pázmány Páter sátány 1/C, Hungary.
2. Department of Ethology, Eötvös Loránd University, H-1117 Budapest, Pázmány Páter sátány 1/C, Hungary.
3. MR Research Centre, Semmelweis University, H-1083 Budapest, Balassa u. 6, Hungary.