PubMed:32133152 / 762-763
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T121","span":{"begin":0,"end":1},"obj":"NN"}],"text":"R"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok133","span":{"begin":0,"end":1},"obj":"NN"}],"text":"R"}