PMC:6988272 / 1857-1881 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/6988272","sourcedb":"PMC","sourceid":"6988272","source_url":"https://www.ncbi.nlm.nih.gov/pmc/6988272","text":"China around 1,200 km so","tracks":[]}