PubMed:31995857 / 937-938
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T156","span":{"begin":0,"end":1},"obj":"CD"}],"text":"1"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok168","span":{"begin":0,"end":1},"obj":"CD"}],"text":"1"}