PMC:7736111 / 66662-66852 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T390","span":{"begin":0,"end":190},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In the study by Grifoni et al. (2020) samples were collected throughout 20–35 days after symptom onset, whereas Weiskopf et al. (2020), used samples collected after 14 days of ICU admission."}