PubMed:32171865 / 31-35
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T5","span":{"begin":2,"end":4},"obj":"IN"}],"text":"s of"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok6","span":{"begin":2,"end":4},"obj":"IN"}],"text":"s of"}