PMC:7795804 / 30188-30203
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T260","span":{"begin":0,"end":15},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Education level"}