Ralph Campbell is a lifelong advocate of nutritional medicine. He maintained a large paediatric practice in Southern California for thirteen years before moving to Polson, Montana, in 1970. Dr. Campbell conducted well-child clinics for the Salish Kootenai Reservation, established the Lake County Health Department and had a private paediatric practice.Andrew W. Saul is the author of Doctor Your Self and Fire Your Doctor! and co author of Orthomolecular Medicine for Everyone, The Vitamin Cure for Alcoholism, Vitamin C: The Real Story, I Have Cancer, What should I do? and others. Dr. Saul is on the editorial board of the Journal of Orthomolecular Medicine and is featured in the documentary film FoodMatters. His noncommercial, natural-healing website is www.DoctorYourself.com