1. Turk DC (1996) Biopsychosocial perspective on chronic pain. In: Gatchel RJ, Turk DC, eds. Psychological approaches to pain management: A practionner’s handbook. New York: Guilford pp 3–32
2. Manchikanti L, Singh A (2008) Therapeutic opioids: a ten year perspective on the complexities and complications of the escalating use, abuse and nonmedical use of opioids. Pain Physician 11:S63–S88
3. Maxwell JC (2011) The prescription drug epidemic in the United States: a perfect storm. Drug Alcohol Rev 30:264–70
4. Hilgard E, Ruch JC, Lange A, et al (1974) The psychophysics of cold pressor pain and its modification through hypnotic suggestion. Am J Psychol 87:17–31
5. Sheehan PW, Perry CW (1976) Methodologies of hypnosis: a critical appraisal of contemporary paradigms of hypnosis. Hillsdale, NJ: Erlbaum