Hypnosis in Surgery, Journal of the National Cancer Institute

The Mind Prepared: Hypnosis in Surgery
by David Spiegel, MD, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine

Along with an excellent set of references, this article is a very good summary of the state and factors of using hypnosis to reduce the pain and anxiety that cancer patients (or any surgery patient, really) feels. The first study mentioned is a 2007 randomized trial of 200 patients. A quote: