PMC:7247521 / 438-447
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T8","span":{"begin":1,"end":9},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"\nAbstract"}