PubMed:32168464 / 135-143
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T23","span":{"begin":2,"end":6},"obj":"CD"}],"text":"f 2019 n"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok26","span":{"begin":2,"end":6},"obj":"CD"},{"id":"lookup9","span":{"begin":2,"end":6},"obj":"year"}],"text":"f 2019 n"}