PubMed:32174267 / 414-418
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T68","span":{"begin":0,"end":4},"obj":"CD"}],"text":"2020"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok73","span":{"begin":0,"end":4},"obj":"CD"},{"id":"lookup17","span":{"begin":0,"end":4},"obj":"year"}],"text":"2020"}