PMC:4144696 / 18115-18174 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4144696","sourcedb":"PMC","sourceid":"4144696","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4144696","text":"a:Estimated as 0.4 x (population of age group 15–19 years).","tracks":[]}