Bakılan , F., Ortanca, B., Ekim, A. and Mutlu, F. Şahin 2023. Does the levels of vitamin D correlate with the levels of vitamin B12 and ferritin in fibromyalgia? Does vitamin D correlate with vitamin B12 and ferritin?. Journal of Surgery and Medicine. 7, 11 (Nov. 2023), 732–735. DOI:https://doi.org/10.28982/josam.7521.