PubMed:32049687 / 899-908
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T157","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"stringent"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok176","span":{"begin":0,"end":9},"obj":"JJ"}],"text":"stringent"}