1. Aronoff GM: Chronic pain and the disability epidemic. Clin J Pain 1991, 7:330–338. Although this article was published in 1991, it emphasizes some of the critical issues that continue to be important in understanding the “disability epidemic.”
2. American Medical Association: In Guides to the Evaluation of Permanent Impairment, edn 4. Chicago: AMA Press; 1994:565–592.
3. Cocchiarella L, Anderson GBJ: American Medical Association. In Guides to the Evaluation of Permanent Impairment, edn 5. Chicago: AMA Press; 2001:565–592. This chapter is essential reading for anyone interested in learning about impairment evaluation.
4. Aronoff GM: Are pain disorder and somatization disorder valid diagnostic entities? Curr Rev Pain 2000, 4:309–321.
5. Okifuji A, Turk DC, Kalauokalani D: Clinical outcome and economic evaluation of multidisciplinary pain centers. In Handbook of Pain Syndromes. Edited by Block A, Kremer E, Fernandez E. Mahway, NJ: Lawrence Erlbaum; 1999:77–98.