PubMed:32023680 / 541-551
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T85","span":{"begin":0,"end":10},"obj":"NN"}],"text":"protection"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok94","span":{"begin":0,"end":10},"obj":"NN"}],"text":"protection"}