PubMed:32027573 / 2004-2012
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T398","span":{"begin":0,"end":8},"obj":"VBN"}],"text":"combined"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok433","span":{"begin":0,"end":8},"obj":"VBN"},{"id":"event18","span":{"begin":0,"end":8},"obj":"OCCURRENCE"}],"text":"combined"}