Effectiveness of public health measures in reducing the incidence of covid-19, SARS-CoV-2 transmission, and covid-19 mortality: systematic review and meta-analysis.
BMJ. 2021 Nov 17;375:e068302. doi: 10.1136/bmj-2021-068302.
BMJ. 2021.
PMID: 34789505
Free PMC article.