PMC:7796344 / 10039-10196 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T63","span":{"begin":0,"end":157},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Validity testing was followed by piloting with twenty Umrah pilgrims of different nationalities and spoken languages, with no changes required post-piloting."}