PubMed:32027573 / 158-168
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T24","span":{"begin":0,"end":10},"obj":"RB"}],"text":"previously"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok30","span":{"begin":0,"end":10},"obj":"RB"}],"text":"previously"}