AUTHOR=Cetta Francesco , Palmieri Maria , Renieri Alessandra , Frullanti Elisa TITLE=Commentary: Potential Links between Hepadnavirus and Bornavirus Sequences in the Host Genome and Cancer JOURNAL=Frontiers in Microbiology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2018.01649 DOI=10.3389/fmicb.2018.01649 ISSN=1664-302X