PubMed:32061066 / 331-332
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T54","span":{"begin":0,"end":1},"obj":"CD"}],"text":"9"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok57","span":{"begin":0,"end":1},"obj":"CD"}],"text":"9"}