PMC:7463108 / 17-135 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":50,"end":58},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"IV Comorbidity – Current and Future Perspectives\n\nAbstract\nWith the current national opioid crisis, it is critical to "}