PubMed:32133152 / 1731-1733
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T257","span":{"begin":0,"end":2},"obj":"CC"}],"text":"or"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok305","span":{"begin":0,"end":2},"obj":"CC"}],"text":"or"}