Akihiro Nishi, Lily F. Lee, Hiroshi Tsuji, Yohsuke Takasaki, Sean D. Young,
”Revisiting the county/city-level event risk assessment during the COVID-19 pandemic”
Journal of Infection, 2021,
ISSN 0163-4453,
https://doi.org/10.1016/j.jinf.2020.12.031.
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