Research
Open Access
Systematic on-site testing for SARS-CoV-2 infection among asymptomatic essential workers in Montréal, Canada: a prospective observational and cost-assessment study
Jonathon R. Campbell, Cynthia Dion, Aashna Uppal, Cedric P. Yansouni and Dick Menzies
May 10, 2022 10 (2) E409-E419; DOI: https://doi.org/10.9778/cmajo.20210290