PMC:7090449 / 22012-22034
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T161","span":{"begin":0,"end":22},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Cardiothoracic surgery"}