PubMed:32145714 / 1744-1749
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T308","span":{"begin":0,"end":5},"obj":"NN"}],"text":"birth"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok370","span":{"begin":0,"end":5},"obj":"NN"}],"text":"birth"}