PMC:7796176 / 26935-27082 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T183","span":{"begin":0,"end":147},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Considering this, we collected data only for four weeks to minimize the risk of recall bias regarding the retrospective nature of some assessments."}