PubMed:32052373 / 1108-1118
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T152","span":{"begin":0,"end":10},"obj":"JJ"}],"text":"protective"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok171","span":{"begin":0,"end":10},"obj":"JJ"}],"text":"protective"}