PMC:7047000 / 3564-3681 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T2","span":{"begin":37,"end":48},"obj":"Chemical"}],"attributes":[{"id":"A2","pred":"chebi_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/CHEBI_33232"}],"text":"Structured letter therapy is free in application scenarios, but it is necessary to emphasize process standardization."}

{"project":"LitCovid-sentences","denotations":[{"id":"T34","span":{"begin":0,"end":117},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Structured letter therapy is free in application scenarios, but it is necessary to emphasize process standardization."}