PubMed:32027573 / 1723-1725
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T346","span":{"begin":0,"end":2},"obj":"IN"}],"text":"vs"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok375","span":{"begin":0,"end":2},"obj":"NNS"}],"text":"vs"}