PubMed:32104911 / 1284-1288
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T196","span":{"begin":0,"end":4},"obj":"NN"}],"text":"PRRA"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok227","span":{"begin":0,"end":4},"obj":"NNP"}],"text":"PRRA"}