PubMed:32250385 / 2247-2250
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok463","span":{"begin":0,"end":3},"obj":"CD"}],"text":"514"}
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T10","span":{"begin":0,"end":3},"obj":"http://purl.obolibrary.org/obo/CLO_0001406"}],"text":"514"}