PMC:7210464 / 62623-62740 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T549","span":{"begin":0,"end":117},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Exit permits were usually distributed to each family in advance and recollected when residents reenter the community."}