PubMed:32062957 / 29-32
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T4","span":{"begin":0,"end":2},"obj":"CD"}],"text":"30 "}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok5","span":{"begin":0,"end":2},"obj":"CD"}],"text":"30 "}