PubMed:32172546 / 804-807
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T129","span":{"begin":0,"end":3},"obj":"NN"}],"text":"PCR"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok142","span":{"begin":0,"end":3},"obj":"NNP"}],"text":"PCR"}