1. Russian Interregional Society for the Study of Pain (ROIB) [electronic resource]. Date of application: 20.10.20. (In Russ.). https://painrussia.ru
2. The International Association for the Study of Pain (The International Association for the Study of Pain (IASP)) [electronic resource]. Date of notification: 20.10.20. (In Russ.). https://www.iasp-pain.org
3. The European Pain Federation (EFIC) [Electronic resource]. Date of request: 20.10.20. (In Russ.). www.efic.org
4. Yakhno NN, Kukushkin ML, Churyukanov MV, et al. Results of an open multicenter study «MERIDIAN» to assess the prevalence of pain syndromes in outpatient practice and the therapeutic preferences of doctors. Rossijskij Zhurnal Boli. 2012;3-4:10-14. (In Russ.)
5. Evaluation and Treatment of Low Back Pain