Paul J. Limburg, M.D., is a consultant in the Division of Gastroenterology and Hepatology, with a joint appointment in the Division of Preventive, Occupational and Aerospace Medicine. He is a professor of medicine in the College of Medicine, Mayo Clinic. He is also the medical director of Mayo Clinic Global Business Solutions, medical director of the Preventive Services Clinic and principal investigator of the Cancer Prevention Network. Dr. Limburg's clinical and research interests are focused on chronic disease prevention, with specific emphases on chemoprevention, molecular epidemiology and early detection.