PubMed:32164400 / 246-249
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T35","span":{"begin":0,"end":3},"obj":"CD"}],"text":"135"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok40","span":{"begin":0,"end":3},"obj":"CD"}],"text":"135"}