PMC:7796344 / 1788-1911 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":" from polio active countries. Nearly a third of pilgrims (n = 305; 30.1%) never wore a face mask in crowded areas during Um","tracks":[]}