PubMed:32156607 / 1173-1183
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T196","span":{"begin":0,"end":10},"obj":"NN"}],"text":"population"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok208","span":{"begin":0,"end":10},"obj":"NN"}],"text":"population"}