AUTHOR=Cascini Fidelia , Causio Francesco Andrea , Failla Giovanna , Melnyk Andriy , Puleo Valeria , Regazzi Luca , Ricciardi Walter 

TITLE=Emerging Issues From a Global Overview of Digital Covid-19 Certificate Initiatives

JOURNAL=Frontiers in Public Health

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2021.744356

DOI=10.3389/fpubh.2021.744356

ISSN=2296-2565