PubMed:32052466 / 391-394
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T66","span":{"begin":0,"end":3},"obj":"DT"}],"text":"all"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok73","span":{"begin":0,"end":3},"obj":"DT"}],"text":"all"}