AUTHOR=Minh Le Huu Nhat , Khoi Quan Nguyen , Le Tran Nhat , Khanh Phan Nguyen Quoc , Huy Nguyen Tien 

TITLE=COVID-19 Timeline of Vietnam: Important Milestones Through Four Waves of the Pandemic and Lesson Learned

JOURNAL=Frontiers in Public Health

VOLUME=9

YEAR=2021

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2021.709067

DOI=10.3389/fpubh.2021.709067

ISSN=2296-2565