 In addition, at the final clinic visit, you will also take part in a personal interview. During the interview, you will be asked questions regarding socio-demographic information such as age and race, nutrition habits, current and earlier tobacco use, alcohol use habits, family history of cancer, use of medications, and how you are feeling. The interview will take about 90 minutes to complete. The purpose of the interview is to collect information to learn if there is a relationship between certain factors and your risk of developing cancer of the mouth. You may be contacted in the future in order to collect more information. 