PMC:7014672 / 2862-3002 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T9","span":{"begin":58,"end":59},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"ed elsewhere and 25 were visitors who stayed in Wuhan for a limited time. By taking the date of symptom onset and travel history together, w"}