PubMed:32102777 / 220-221
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T39","span":{"begin":0,"end":1},"obj":"CD"}],"text":"7"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok43","span":{"begin":0,"end":1},"obj":"CD"}],"text":"7"}