PMC:7095437 / 59-94
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T2","span":{"begin":3,"end":13},"obj":"http://purl.obolibrary.org/obo/BFO_0000030"}],"text":"ct\nObjectives\nTo systematically ana"}
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T3","span":{"begin":3,"end":13},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ct\nObjectives\nTo systematically ana"}