PubMed:32064853 / 576-577
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T99","span":{"begin":0,"end":1},"obj":"LS"}],"text":"3"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok106","span":{"begin":0,"end":1},"obj":"LS"}],"text":"3"}