PMC:7795804 / 21170-21378 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T123","span":{"begin":0,"end":208},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The sampling strategy allowed us to collect data from quite a large sample, which in fact numerically mirrors that investigated by other similar study designs conducted to explore the same theme [9,15,28,30]."}