PubMed:32118639 / 1755-1760
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T283","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"swabs"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok312","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"swabs"}