PubMed:32064853 / 524-525
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T89","span":{"begin":0,"end":1},"obj":"LS"}],"text":"2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok96","span":{"begin":0,"end":1},"obj":"LS"}],"text":"2"}