PubMed:32118389 / 857-858
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T147","span":{"begin":0,"end":1},"obj":"CD"}],"text":"7"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok156","span":{"begin":0,"end":1},"obj":"CD"}],"text":"7"}