PubMed:31996494 / 29-36 JSONTXT

{"project":"LitCovid-TimeML","denotations":[{"id":"tok6","span":{"begin":2,"end":6},"obj":"CD"},{"id":"tok7","span":{"begin":6,"end":7},"obj":":"},{"id":"lookup1","span":{"begin":2,"end":6},"obj":"year"}],"text":"e 2019-"}