PMC:7463108 / 5605-5711 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T56574","span":{"begin":71,"end":74},"obj":"http://purl.obolibrary.org/obo/CLO_0051582"},{"id":"T16931","span":{"begin":82,"end":83},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" for one-third of the illicit opioids seized in 2017 (UNODC 2019c) and has become a global problem (UNODC "}