PubMed:32134681 / 864-865
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T140","span":{"begin":0,"end":1},"obj":"NN"}],"text":"±"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok156","span":{"begin":0,"end":1},"obj":"NN"}],"text":"±"}