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PMC:7095437 / 49-84
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T2","span":{"begin":13,"end":23},"obj":"http://purl.obolibrary.org/obo/BFO_0000030"}],"text":"gs\n\nAbstract\nObjectives\nTo systemat"}
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":4,"end":12},"obj":"Sentence"},{"id":"T3","span":{"begin":13,"end":23},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"gs\n\nAbstract\nObjectives\nTo systemat"}