PubMed:32209890 / 498-501
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok90","span":{"begin":0,"end":3},"obj":"CD"},{"id":"lookup19","span":{"begin":0,"end":3},"obj":"time"},{"id":"lookup20","span":{"begin":0,"end":3},"obj":"number"}],"text":"two"}