Mariusz Wirga, M.D. Chief of the Department of Psychiatry of Las Vegas Medical Center, Clinical Assistant Professor at the Department of Psychiatry, University of New Mexico. Trained extensively in Cognitive Behavior Therapy by Albert Ellis, (founder of Rational Emotive Therapy), Maxie C. Maultsby, Jr., (founder of Rational Behavior Therapy), O. Carl Simonton (pioneer of psychooncology), and Marsha Lienehan (founder of Dialectical Behavior Therapy). Dr. Wirga is experienced in applying cognitive behavioral therapy with persons diagnosed with cancer and their families, persons with AIDS as well as many different psychiatric conditions. Dr. Wirga has taught cognitive-behavior therapy for 15 years.