PubMed:31995857 / 276-281
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T48","span":{"begin":0,"end":5},"obj":"JJ"}],"text":"first"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok55","span":{"begin":0,"end":5},"obj":"JJ"},{"id":"lookup16","span":{"begin":0,"end":5},"obj":"date"}],"text":"first"}