PMC:7796344 / 98-231 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T3","span":{"begin":6,"end":17},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"tract\nBackground: Annually, approximately 10 million pilgrims travel to the Kingdom of Saudi Arabia (KSA) for Umrah from more than 18"}