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机译:The design and analysis of non-randomized studies: a case study of off-label use of hydroxychloroquine in the COVID-19 pandemic
Harvard TH Chan Sch Publ Hlth, Dept Biostat, Boston, MA USA;
Vanderbilt Univ, Sch Med, Dept Biostat, Nashville, TN 37203 USA;
Clinical trials; COVID-19; non-randomized study; off-label drug; hydroxychloroquine; pandemic; SARS-CoV-2;