PubMed:32052466 / 58-68
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T9","span":{"begin":0,"end":10},"obj":"JJ"}],"text":"systematic"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok10","span":{"begin":0,"end":10},"obj":"JJ"}],"text":"systematic"}