PubMed:32061066 / 129-137
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T23","span":{"begin":2,"end":5},"obj":"CC"}],"text":"e and an"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok25","span":{"begin":2,"end":5},"obj":"CC"}],"text":"e and an"}