PubMed:32211963 / 278-281
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok42","span":{"begin":0,"end":3},"obj":"CD"},{"id":"lookup7","span":{"begin":0,"end":3},"obj":"time"},{"id":"lookup8","span":{"begin":0,"end":3},"obj":"number"}],"text":"two"}