PubMed:32149769 / 252-258
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T36","span":{"begin":0,"end":6},"obj":"VBN"}],"text":"needed"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok46","span":{"begin":0,"end":6},"obj":"VBN"},{"id":"event8","span":{"begin":0,"end":6},"obj":"OCCURRENCE"}],"text":"needed"}