AUTHOR=D'Aniello Biagio , Pinelli Claudia , Varcamonti Mario , Rendine Marcello , Lombardi Pietro , Scandurra Anna TITLE=COVID Sniffer Dogs: Technical and Ethical Concerns JOURNAL=Frontiers in Veterinary Science VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2021.669712 DOI=10.3389/fvets.2021.669712 ISSN=2297-1769