PubMed:32166128 / 751-760
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T124","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"necessary"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok131","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"necessary"}