PMC:7796344 / 3077-3303 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T24","span":{"begin":44,"end":46},"obj":"Sentence"},{"id":"T25","span":{"begin":47,"end":59},"obj":"Sentence"},{"id":"T26","span":{"begin":60,"end":214},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" and Hajj and other religious pilgrimages.\n\n1. Introduction\nAround 10 million pilgrims travel annually to the Kingdom of Saudi Arabia (KSA) for Umrah (a minor pilgrimage to Makkah) from more than 180 countries [1]. According t"}