PMC:7335494 / 25969-26032 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T2044","span":{"begin":44,"end":59},"obj":"CHEBI:26195;CHEBI:26195"}],"text":"Cross-over, randomized, placebo-controlled, double-blind, study"}