PubMed:32081569 / 234-238
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T37","span":{"begin":0,"end":4},"obj":"CD"}],"text":"2019"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok43","span":{"begin":0,"end":4},"obj":"CD"},{"id":"lookup13","span":{"begin":0,"end":4},"obj":"year"}],"text":"2019"}