Turk DC. Clinical effectiveness and cost-effectiveness of treatments for patients with chronic pain. Clin J Pain 2002; 18: 355-365.
Verhaak PFM, Kerssens JJ, Dekker J, Sorbi MJ, Bensing JM. Prevalence of chronic benign pain disorder among adults: a review of the literature. Pain 1998; 77: 231-239.
Asmundson GJG, Norton PJ, Norton GR. Beyond pain: the role of fear and avoidance in chronicity. Clin Psychol Rev 1999; 19: 97-119.
Vlaeyen JWS, Linton SJ. Fear-avoidance and its consequences in chronic musculoskeletal pain: a state of the art. Pain 2000; 85: 317-332.
Vlaeyen JWS, de Jong J, Sieben J, Crombez G. Graded exposure in vivo for pain-related fear. In: Turk DC, Gatchel RJ, eds. Psychological approaches to pain management: a practitioner’s handbook. New York: Guilford Publications, 2002: 210-233.