PMC:7601109 / 8932-9018 JSONTXT

{"project":"LitCovid-PD-UBERON","denotations":[{"id":"T7","span":{"begin":5,"end":9},"obj":"Body_part"}],"attributes":[{"id":"A7","pred":"uberon_id","subj":"T7","obj":"http://purl.obolibrary.org/obo/UBERON_2000006"}],"text":"Snow ball manual search using reference lists of retrieved studies was also conducted."}

{"project":"LitCovid-sentences","denotations":[{"id":"T56","span":{"begin":0,"end":86},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Snow ball manual search using reference lists of retrieved studies was also conducted."}