The introduction of a mandatory mask policy was associated with significantly reduced COVID-19 cases in a major metropolitan city
- Type
- Expression of concern
- Notice date
- 4/21/2023 0:00
- Journal
- PLoS One
- Publisher
- PLoS
- Notice DOI
- 10.1371/journal.pone.0284939
- Original paper DOI
- 10.1371/journal.pone.0253510