1. Departamento de Ecología Integrativa Estación Biológica de Doñana (CSIC) Sevilla Spain
2. Departamento de Genética Facultad de Biología Universidad Complutense Madrid Spain
3. Department of Animal Ecology Russian Research Institute of Game Management and Fur Farming Kirov Russia
4. Mammal Research Institute Polish Academy of Sciences Białowieża Poland