During the session today, you will be asked to complete 8-9 questionnaires about smoking history, health status, current medications you are taking, your confidence in quitting smoking, symptoms of nicotine dependence and withdrawal, symptoms of depression, negative experiences during childhood, and your thoughts and feelings about work and the quality of your relationships with others. In total, the questionnaires should take about 30-45 minutes to complete. You will also blow into a machine that measures the amount of carbon monoxide in your blood (a breath test). This visit may last 1 ½ to 2 hours.