PubMed:32133830 / 202-206
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T31","span":{"begin":2,"end":4},"obj":"IN"}],"text":"r of"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok34","span":{"begin":2,"end":4},"obj":"IN"}],"text":"r of"}