PMC:7195088 / 1659-1753 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7195088","sourcedb":"PMC","sourceid":"7195088","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7195088","text":"controlled trials should be expanded as much as possible because it is the most secure way to ","tracks":[]}