1. Institute of Medicine. (2011). Relieving pain in America: A blueprint for transforming prevention, care, education, and research. Washington, DC: The National Academies Press.
2. van Hecke, O., Torranc, N., & Smith, B. H. (2013). Chronic pain epidemiology and its clinical relevance. British Journal of Anaesthesia,
111(1), 13–18.
3. Jackson, T. P., Stabile, V. S., & McQueen, K. K. (2014). The global burden of chronic pain. ASA Newsletter.,
78(6), 24–27.
4. Ospina, M., Harstall C. (2002). Prevalence of chronic pain: An overview. Edmonton, AB: Alberta Heritage Foundation for Medical Research. AHFMR Report - HTA 29.
5. Woolf, A. D., & Pfleger, B. (2003). Burden of major musculoskeletal conditions. Bulletin of the World Health Organization,
81, 646–656.