PubMed:32104911 / 1023-1027
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T157","span":{"begin":0,"end":4},"obj":"NN"}],"text":"year"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok174","span":{"begin":0,"end":4},"obj":"NN"},{"id":"lookup19","span":{"begin":0,"end":4},"obj":"date_unit"}],"text":"year"}