PMC:7796344 / 92-219 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":3,"end":11},"obj":"Sentence"},{"id":"T3","span":{"begin":12,"end":23},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"9\n\nAbstract\nBackground: Annually, approximately 10 million pilgrims travel to the Kingdom of Saudi Arabia (KSA) for Umrah from "}