PubMed:32167166 / 1336-1341
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T218","span":{"begin":0,"end":5},"obj":"NN"}],"text":"drift"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok248","span":{"begin":0,"end":5},"obj":"NN"}],"text":"drift"}