
PMC:7786642 / 24379-24434
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T204","span":{"begin":0,"end":55},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"4.3 Comparison with previous studies focusing on PM2.5"}