PubMed:32172226 / 97-107
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T14","span":{"begin":6,"end":8},"obj":"IN"}],"text":"umber of p"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok17","span":{"begin":6,"end":8},"obj":"IN"}],"text":"umber of p"}