PubMed:32112549 / 342-347
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T52","span":{"begin":0,"end":5},"obj":"JJ"}],"text":"front"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok55","span":{"begin":0,"end":5},"obj":"JJ"}],"text":"front"}