CORD-19:4ca5d854d3f99440b507fd7dfae73c8ad6fc45d5 / 2161-2200 JSONTXT

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    CORD-PICO

    {"project":"CORD-PICO","denotations":[{"id":"p1_all5","span":{"begin":0,"end":39},"obj":"Intervention"}],"text":"standard ethanol/formic acid extraction"}