Nicotine dependence, chewing tobacco, in remission Inclusion term(s):Tobacco use disorder, chewing tobacco, mild, in early remissionTobacco use disorder, chewing tobacco, mild, in sustained remissionTobacco use disorder, chewing tobacco, moderate, in early remissionTobacco use disorder, chewing tobacco, moderate, in sustained remissionTobacco use disorder, chewing tobacco, severe, in early remissionTobacco use disorder, chewing tobacco, severe, in sustained remission