PubMed:32145714 / 1292-1293
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T233","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok274","span":{"begin":0,"end":1},"obj":"LS"}],"text":"3"}