PMC:7143804 / 3449-3470 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T28","span":{"begin":0,"end":4},"obj":"Sentence"},{"id":"T29","span":{"begin":5,"end":21},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"1.1. State-of-the-Art"}