PMC:7306567 / 407-473 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T2","span":{"begin":7,"end":10},"obj":"http://purl.obolibrary.org/obo/CLO_0051582"},{"id":"T3","span":{"begin":37,"end":40},"obj":"http://purl.obolibrary.org/obo/PR_000001343"}],"text":"seases has proven difficult, and our aim was to develop case defin"}