PMC:7780429 / 781-845 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7780429","sourcedb":"PMC","sourceid":"7780429","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7780429","text":"(21.2%) other health workers. 208 (79.7%) used surgical masks an","tracks":[]}