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There are 2.1 million people worldwide suffering from multiple sclerosis. It is thought to be an autoimmune disorder in which the immune system attacks the body’s own nervous system. To date there is no known cure. At best, some therapies can slow the progression of the disease. The array of symptoms, such as loss of muscle control, some vision and widespread pain plague patients. Desperate, some of these patients are turning to a treatment that is widely condemned by experts in the MS field. The treatment, pioneered by an Italian surgeon, also has powerful support from a small handful of practitioners and patients continually in search of...