PMC:7796344 / 7160-7317 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7796344","sourcedb":"PMC","sourceid":"7796344","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7796344","text":" (n = 1000) with only Saudi nationals permitted [19]. The wearing of face masks was mandated with no public health emergency noted when the Hajj ended early ","tracks":[]}