PubMed:32141570 / 936-944
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T142","span":{"begin":0,"end":8},"obj":"NN"}],"text":"research"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok153","span":{"begin":0,"end":8},"obj":"NN"}],"text":"research"}