PMC:7736111 / 66574-66661 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T389","span":{"begin":0,"end":87},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"A further difference in the time of sample collection may also complicate the findings."}