PubMed:32167166 / 259-263
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T44","span":{"begin":0,"end":4},"obj":"CD"}],"text":"2019"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok49","span":{"begin":0,"end":4},"obj":"CD"},{"id":"lookup10","span":{"begin":0,"end":4},"obj":"year"}],"text":"2019"}