PMC:7796344 / 8772-8957 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T57","span":{"begin":153,"end":157},"obj":"Sentence"},{"id":"T58","span":{"begin":158,"end":183},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"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.\n\n2.2. Questionnaire Development\nT"}