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机译:Effectiveness of 3 Versus 6 ft of Physical Distancing for Controlling Spread of Coronavirus Disease 2019 Among Primary and Secondary Students and Staff: A Retrospective, Statewide Cohort Study (vol 73, pg 1871, 2021)
Infect Dis Sect,Beth Israel Deaconess Med Ctr;
Dept Emergency Med,Boston Univ;
COVID19 Sch Response DashboardVA Boston Ctr Healthcare Org & Implementat Res CHIDEAS Ctr,Vet Affairs Salt Lake City Healthcare Syst;