PMC:7796291 / 196-336 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7796291","sourcedb":"PMC","sourceid":"7796291","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7796291","text":"the extended wear of single-use, disposable respirators was inevitable due to limited supplies. As a respirator is front-line protection aga","tracks":[]}