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51 reported that the synergistic interaction was more evident among individuals without HBV or HCV, but the sample size was limited ( n = 83)

The researchers compared smoking status determined by a manual review of clinical records to two automated definitions: ICD-9 and natural language processing that extracts smoking status from the narrative text of electronic medical records

Crucially, neglecting cohort-related smoking patterns undoubtedly will lead to erroneous interpretation of trends, inappropriate conclusions about the efficacy of tobacco control policies, and inaccurate projections of cigarette consumption

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