PubMed:31994742 / 278-279
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T47","span":{"begin":0,"end":1},"obj":"DT"}],"text":"A"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok54","span":{"begin":0,"end":1},"obj":"DT"}],"text":"A"}