PMC:7444865 / 12850-13016 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T85","span":{"begin":0,"end":166},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We contracted with Qualtrics because their panels are relatively more demographically representative than other online survey platforms for convenience sampling [26]."}