PubMed:32031570 / 58-63
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T7","span":{"begin":1,"end":5},"obj":"CD"}],"text":" 2019"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok8","span":{"begin":1,"end":5},"obj":"CD"},{"id":"lookup2","span":{"begin":1,"end":5},"obj":"year"}],"text":" 2019"}