PubMed:32050635 / 64-69
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok11","span":{"begin":0,"end":4},"obj":"CD"},{"id":"tok12","span":{"begin":4,"end":5},"obj":":"},{"id":"lookup2","span":{"begin":0,"end":4},"obj":"year"}],"text":"2019-"}