1. Department of Veterinary Medicine, University of Sassari, via Vienna 2, Sassari 07100, Italy
2. Parc Naziunal Svizzer, Zernez 7530, Switzerland
3. Gran Paradiso National Park, Via Pio VII 9, Torino 10135, Italy
4. Department of Life Science and Biotechnology, University of Ferrara, via Borsari 46, Ferrara, 44121, Italy