PMC:7179483 / 6828-6833
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T34","span":{"begin":0,"end":5},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"None."}