PubMed:32154135 / 1096-1097
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T192","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok212","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}