PMC:7130010 / 2638-2664 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T19","span":{"begin":0,"end":20},"obj":"Sentence"},{"id":"T20","span":{"begin":21,"end":26},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Previously published\nNone."}