 Participants in both groups will also be provided with telephone counseling. For the first 4 weeks after starting treatment, the patients will receive weekly phone calls and then at the end of 8 weeks. The purpose of these calls will be to report smoking status and to help encourage continued and long-term abstinence. Patients then will be asked to come to the hospital for a visit at the end of their treatment period, i.e. 12 weeks after the treatment started. They will be compensated for the traveling and parking cost and required to bring the bottles including the remaining pills. In this visit, patients will be asked about their smoking status and their stage of change using Prochaska and DiClementes model or no. of cigarette smoked day for those who have not quit smoking. In addition, the self-reported abstinence will then be verified by measurement of expired carbon monoxide COE and urinary cotinine in all patients. For the rest of follow-up period, i.e. until the end of week 52 after treatment, patients will receive phone calls every 4 weeks to encourage continued and long-term abstinence. The smoking status, stage of change and no. of cigarette smoked day will also be reported at 24- and 52- week follow-up phone calls. To verify self-reports of abstinence, we will also mail the NicAlert urine cotinine strips Accutest at 24 and 52 weeks after treatment to the patients along with instructions of how to do the test. Patients will be asked by telephone calls to do the test and to return the strips using prepaid return envelops including a small plastic pouch. 