PMC:7796344 / 549-662 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":69,"end":77},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" history and health education, among Umrah pilgrims in Saudi Arabia. Methods: A cross sectional survey was admini"}