PMC:7786642 / 8093-8243 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T69","span":{"begin":0,"end":150},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We defined long-term exposure to these compounds as the mean of the past 5 years for which data was available at the time of analysis, i.e. 2014–2018."}