Taxonomic updates for the genus Gyrovirus (family Anelloviridae): recognition of several new members and establishment of species demarcation criteria

Simona Kraberger, Tanja Opriessnig, V. Celer, Fabrizio Maggi, Hiroaki Okamoto, Anne-Lie Blomström, Dániel Cadar, Balázs Harrach, Philippe Biagini, Arvind Varsani