PubMed:32074786 / 2927-2936
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T433","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"necessary"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok465","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"necessary"}