PMC:7102556 / 12482-12619 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T80","span":{"begin":0,"end":137},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Finally, there is the problem of return on investment which may be slow and, hence, inhibit investments and slow down the clinical study."}