1. Department of Biology and Biotechnology, University of Pavia, Pavia, Italy
2. Microbiology and Virology Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
3. Istituto Zooproflattico Sperimentale della Lombardia e dell’Emilia Romagna, Pavia, Italy
4. The Milner Centre for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
5. Department of Bioscience, University of Milan, Milan, Italy
6. Fondazione IRCCS Policlinico San Matteo, Pavia, Italy