PubMed:32145714 / 1603-1612
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T286","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"obstetric"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok347","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"obstetric"}