PMC:7784830 / 21861-21960 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T167","span":{"begin":0,"end":99},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Vaccination is considered as one of the most effective ways of preventing cause of a disease [103]."}