PubMed:32062875 / 228-235
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T32","span":{"begin":0,"end":4},"obj":"CD"}],"text":"2019 no"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok34","span":{"begin":0,"end":4},"obj":"CD"},{"id":"lookup4","span":{"begin":0,"end":4},"obj":"year"}],"text":"2019 no"}