PMC:7239011 / 5737-5742
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T40","span":{"begin":0,"end":5},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"None."}