PMC:7558233 / 34935-35119 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T207","span":{"begin":0,"end":184},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"On the basis of usual care in a randomized clinical trial, convalescent plasma therapy did not confer additional benefits in terms of the time to clinical improvement within 28 d [69]."}