PubMed:32133152 / 1118-1120
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T170","span":{"begin":0,"end":2},"obj":"CD"}],"text":"29"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok197","span":{"begin":0,"end":2},"obj":"CD"}],"text":"29"}