PubMed:32077115 / 1345-1349
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T234","span":{"begin":0,"end":4},"obj":"NN"}],"text":"sign"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok279","span":{"begin":0,"end":4},"obj":"NN"}],"text":"sign"}