PMC:7008072 / 213-270 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7008072","sourcedb":"PMC","sourceid":"7008072","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7008072","text":"over the world but did not restrict international transpo","tracks":[]}