PubMed:32188728 / 719-727
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok114","span":{"begin":0,"end":8},"obj":"NN"}],"text":"activity"}
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T10","span":{"begin":0,"end":8},"obj":"http://purl.obolibrary.org/obo/CLO_0001658"}],"text":"activity"}