PMC:7780429 / 7701-7852 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T47","span":{"begin":0,"end":151},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"It included a request for voluntary collaboration, information on the reason for the survey, instructions for completing the questionnaire and consent."}