PMC:7014668 / 5879-6011 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T37","span":{"begin":0,"end":132},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Vertical lines represent the exit screening at start of travel (solid) and entry screening at end of travel (dashed) 12 hours later."}