I would like to thank the following people that took my test and evaluated the 40 patients to see if they were smokers or non-smokers. They are: Jean-Michel and Agnesse Leprince, Dr. Mindy Black, Ruth Gesser, Emilie Johnsson and my mom. I would also like to thank Erik Brown for his help in recruiting subjects. Thanks to all the people who agreed to participate in my project and had their voices recorded. Thanks to my parents for their help and collaboration.