PubMed:32031570 / 3110-3111
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T630","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok742","span":{"begin":0,"end":1},"obj":"CD"}],"text":"3"}