PMC:1440874 / 61351-61433 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/1440874","sourcedb":"PMC","sourceid":"1440874","source_url":"http://www.ncbi.nlm.nih.gov/pmc/1440874","text":"Competing interests. The authors have declared that no competing interests exist.\n","tracks":[]}