PMC:2918338 / 3912-4327 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/2918338","sourcedb":"PMC","sourceid":"2918338","source_url":"https://www.ncbi.nlm.nih.gov/pmc/2918338","text":"During the analysis of the possible causes of this mortality, some limitations in the study were noted: Use of multiple review boards instead of a single review board, absence of central oversight committee, lack of data on smoking habits of patients, inclusion of elderly population (who are exposed to many other confounding factors for mortality) and lack of data on some possible factors responsible for deaths.","tracks":[]}