PubMed:32105637 / 795-796
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T130","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok139","span":{"begin":0,"end":1},"obj":"CD"}],"text":"2"}