PubMed:32133830 / 58-63
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T9","span":{"begin":2,"end":4},"obj":"IN"}],"text":"r of "}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok10","span":{"begin":2,"end":4},"obj":"IN"}],"text":"r of "}