PMC:7266473 / 442-584 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T5","span":{"begin":0,"end":142},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Travel restrictions imposed against citizens from countries with major outbreaks including China, USA and those in Europe were too late [2,3]."}