PubMed:33210488 / 148-252 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T5","span":{"begin":0,"end":104},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"A total of 180 medical goggles of the same brand and same model were randomly divided into three groups."}