In the article titled “Assessment of Relationship between Vitamin D Deficiency and Pain Severity in Patients with Low Back Pain: A Retrospective, Observational Study”, published on pages 680-684, Issue 3, Volume 12 of Anesthesia: Essays and Researches[1], the reference number 24 is written incorrectly as “Fidan F, Alkan BM, Tosun A. Pandemic of the Era: Vitamin D Deficiency and Insufficiency. Türk Osteoporoz Derg. 2014;20:71-4.”Thus, the correct reference number 24 is as follows:Karahan AY, Hüner B, Kuran B, Sezer N, Celik C, Salbas E, et al. Vitamin D Level and Non-specific Musculoskeletal System Pain: A Multicenter Retrospective Study (Stroke Study Group). Turk J Osteoporos 2017; 23: 61-66.