PubMed:32133830 / 1783-1791
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T327","span":{"begin":0,"end":8},"obj":"NN"}],"text":"exposure"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok364","span":{"begin":0,"end":8},"obj":"NN"}],"text":"exposure"}