PMC:7796344 / 570-711 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":48,"end":56},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ducation, among Umrah pilgrims in Saudi Arabia. Methods: A cross sectional survey was administered to pilgrims from February to April 2019 at"}