PMC:7267243 / 2257-2301
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T25","span":{"begin":1,"end":28},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"\nAge (y) 62 70 54 73 54\nMedical history"}