PMC:7696151 / 31667-31791 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T215","span":{"begin":0,"end":124},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"These results were confirmed by a recent randomized, double-blind, placebo-controlled trial conducted in the USA and Canada."}