PMC:7784824 / 11733-11857 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T121","span":{"begin":0,"end":124},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"If the initial nasopharyngeal swab was found to be negative, a second nasopharyngeal and additional anal swab were analyzed."}