PMC:7045878 / 19369-19383 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T152","span":{"begin":0,"end":14},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"50–59 8 28.6"}