PMC:7781500 / 152-244 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T4","span":{"begin":7,"end":17},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"stract\nBackground\nPreventive practices are the mainstay to mitigate the spread of the COVID-"}