Patients will be offered NRT by trained nurse/health educators, in the form of gum (Nicorette 2 or 4 mg) or patch (Nicoderm 14 or 21 mg), depending on patients' preference. We will obtain the approval from each subject's physician before providing NRT. Upon physician consent, patients will be instructed in the correct use of nicotine patch or gum by nurses/health educators using an 8-week protocol for both the nicotine patch and gum) [see NRT protocol].