PubMed:32062875 / 1189-1191
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T205","span":{"begin":0,"end":2},"obj":"CD"}],"text":"13"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok223","span":{"begin":0,"end":2},"obj":"CD"}],"text":"13"}
MeasurableQuantitativeAnnotation
{"project":"MeasurableQuantitativeAnnotation","denotations":[{"id":"N3","span":{"begin":0,"end":2},"obj":"num"}],"text":"13"}