PubMed:32176772 / 843-845
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T172","span":{"begin":0,"end":2},"obj":"CD"}],"text":"66"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok193","span":{"begin":0,"end":2},"obj":"CD"}],"text":"66"}