- Arm II: Patients receive smoking-cessation therapy based on the 4-step intervention plan in the "Manual for Physicians" published by the National Cancer Institute. The smoking cessation coordinator and physician provide self-quitting advice and support to the patient via counseling, self-help materials, and referral to a smoking cessation counselor at the Cancer Information Service (CIS). Patients receive nicotine replacement, if indicated. Patients who express an interest in more intensive treatment are referred to local American Cancer Society or American Lung Association clinics and/or advised to call the CIS for additional local program referrals.