PMC:7796344 / 8725-8923 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T54","span":{"begin":0,"end":4},"obj":"Sentence"},{"id":"T55","span":{"begin":5,"end":17},"obj":"Sentence"},{"id":"T56","span":{"begin":18,"end":198},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2.1. Study Design\nA cross-sectional survey was conducted among Umrah pilgrims before departure from February to the end of April 2019 at King Abdul Aziz Airport-Islamic port in Jeddah, Saudi Arabia."}