PubMed:32154135 / 609-616
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T103","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"mothers"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok116","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"mothers"}