 The intervention program for this study will be primarily based on the smoking cessation guidelines endorsed by the Department of Family and Community Medicine, University of Toronto. The study research staffs including the research coordinator will be trained in accordance with these guidelines and the reading material provided will also be based on the same guidelines. The counseling skills of the coordinator will be reviewed every 3 months to ensure minimal variability. The coordinator will also be involved in regular meetings to address difficult situations and scenarios. They will also be provided checklists for all interventions to ensure that all components are covered uniformly for each patient. For each patient, the research staff who interviews the patient at the beginning will be the same during the whole treatment and follow-up period. 