1. Freburger JK, Holmes GM, Agans RP, et al. The rising prevalence of chronic low back pain. Arch Intern Med. 2009;169(3):251-258
2. Palmer KT, Walsh K, Bendall H, Cooper C, Coggon D. Back pain in Britain: comparison of two prevalence surveys at an interval of 10 years. BMJ. 2000;320(7249):1577-1578
3. Global Burden of Disease Study 2013 Collaborators. Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990—2013: A systematic analysis for the Global Burden of Disease Study 2013. Lancet. 2015;386(9995):743-800
4. Davydov OS. The prevalence of pain syndromes and their impact on quality of life in the world and Russia according to the data of the Global Burden of Disease Study in the period 1990 to 2013. Russian Journal of Pain. 2015;3-4:5-12. (In Russ.)
5. Schmidt C, et al. Back Pain in the German Adult Population: Prevalence, Severity, and Sociodemographic Correlates in a Multiregional Survey. Spine. 2007;32(18):2005-2011