PubMed:32031570 / 2752-2754
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T538","span":{"begin":0,"end":2},"obj":"IN"}],"text":"vs"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok632","span":{"begin":0,"end":2},"obj":"NNS"}],"text":"vs"}