PubMed:32049687 / 679-680
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T125","span":{"begin":0,"end":1},"obj":"DT"}],"text":"a"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok141","span":{"begin":0,"end":1},"obj":"DT"}],"text":"a"}