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It also suggests that we need to be more precise when we ask about cigarette smoking frequency." Jonathan Foulds, Professor of Public Health Sciences and Psychiatry and Behavioral Health, Penn State According to Jason Oliver, assistant professor of psychiatry and behavioral sciences, Duke University, when assessing nicotine addiction -- clinically referred to as 'tobacco use disorder' -- clinicians are encouraged to fully assess the 11 criteria listed in the 5th edition of the Diagnostic and Statistical Manual (DSM-5)