PMC:2846953 / 4778-4840
Annnotations
{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/2846953","sourcedb":"PMC","sourceid":"2846953","source_url":"https://www.ncbi.nlm.nih.gov/pmc/2846953","text":"Special interest variables: stratification (1) Smoking Status","divisions":[{"label":"td","span":{"begin":0,"end":46}}],"tracks":[]}