PMC:7267510 / 23371-23437 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7267510","sourcedb":"PMC","sourceid":"7267510","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7267510","text":"Direct laryngoscopy with biopsy, rigid esophagoscopy, bronchoscopy","tracks":[]}