PubMed:32061200 / 1236-1237
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T221","span":{"begin":0,"end":1},"obj":"CD"}],"text":"9"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok241","span":{"begin":0,"end":1},"obj":"CD"}],"text":"9"}