PMC:4137988 / 41995-42056 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4137988","sourcedb":"PMC","sourceid":"4137988","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4137988","text":"Wheezing, shortness of breath at the age of 2, 3, and 4 years","tracks":[]}