PubMed:32235387 / 76-84
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok13","span":{"begin":2,"end":6},"obj":"CD"},{"id":"tok14","span":{"begin":6,"end":7},"obj":","},{"id":"lookup2","span":{"begin":2,"end":6},"obj":"year"}],"text":"r 2019, "}